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-rw-r--r--mesalib/src/mesa/main/extensions.c3
-rw-r--r--mesalib/src/mesa/main/fbobject.c5022
-rw-r--r--mesalib/src/mesa/main/formats.c44
-rw-r--r--mesalib/src/mesa/main/formats.h4
-rw-r--r--mesalib/src/mesa/main/framebuffer.c2182
-rw-r--r--mesalib/src/mesa/main/texfetch.c28
-rw-r--r--mesalib/src/mesa/main/texfetch_tmp.h104
-rw-r--r--mesalib/src/mesa/main/texformat.c16
-rw-r--r--mesalib/src/mesa/main/texstore.c20
9 files changed, 3835 insertions, 3588 deletions
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index c45265900..8a0ab9615 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -124,6 +124,7 @@ static const struct extension extension_table[] = {
{ "GL_ARB_texture_env_combine", o(ARB_texture_env_combine), GL, 2001 },
{ "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar), GL, 2001 },
{ "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3), GL, 2001 },
+ { "GL_ARB_texture_float", o(ARB_texture_float), GL, 2004 },
{ "GL_ARB_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL, 2001 },
{ "GL_ARB_texture_multisample", o(ARB_texture_multisample), GL, 2009 },
{ "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two), GL, 2003 },
@@ -268,6 +269,7 @@ static const struct extension extension_table[] = {
{ "GL_ATI_separate_stencil", o(ATI_separate_stencil), GL, 2006 },
{ "GL_ATI_texture_compression_3dc", o(ATI_texture_compression_3dc), GL, 2004 },
{ "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GL, 2002 },
+ { "GL_ATI_texture_float", o(ARB_texture_float), GL, 2002 },
{ "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL, 2006 },
{ "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays), GL, 1998 },
{ "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip), GL, 1996 },
@@ -278,7 +280,6 @@ static const struct extension extension_table[] = {
{ "GL_MESA_texture_array", o(MESA_texture_array), GL, 2007 },
{ "GL_MESA_texture_signed_rgba", o(EXT_texture_snorm), GL, 2009 },
{ "GL_MESA_window_pos", o(ARB_window_pos), GL, 2000 },
- { "GL_MESAX_texture_float", o(ARB_texture_float), GL, 2009 },
{ "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL, 2002 },
{ "GL_NV_blend_square", o(NV_blend_square), GL, 1999 },
{ "GL_NV_conditional_render", o(NV_conditional_render), GL, 2008 },
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index 76493f1a8..1edb310ea 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -1,2496 +1,2526 @@
-/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/*
- * GL_EXT/ARB_framebuffer_object extensions
- *
- * Authors:
- * Brian Paul
- */
-
-
-#include "buffers.h"
-#include "context.h"
-#include "enums.h"
-#include "fbobject.h"
-#include "formats.h"
-#include "framebuffer.h"
-#include "hash.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-#include "renderbuffer.h"
-#include "state.h"
-#include "teximage.h"
-#include "texobj.h"
-
-
-/** Set this to 1 to help debug FBO incompleteness problems */
-#define DEBUG_FBO 0
-
-/** Set this to 1 to debug/log glBlitFramebuffer() calls */
-#define DEBUG_BLIT 0
-
-
-/**
- * Notes:
- *
- * None of the GL_EXT_framebuffer_object functions are compiled into
- * display lists.
- */
-
-
-
-/*
- * When glGenRender/FramebuffersEXT() is called we insert pointers to
- * these placeholder objects into the hash table.
- * Later, when the object ID is first bound, we replace the placeholder
- * with the real frame/renderbuffer.
- */
-static struct gl_framebuffer DummyFramebuffer;
-static struct gl_renderbuffer DummyRenderbuffer;
-
-/* We bind this framebuffer when applications pass a NULL
- * drawable/surface in make current. */
-static struct gl_framebuffer IncompleteFramebuffer;
-
-
-#define IS_CUBE_FACE(TARGET) \
- ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
- (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
-
-
-static void
-delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
-{
- /* no op */
-}
-
-static void
-delete_dummy_framebuffer(struct gl_framebuffer *fb)
-{
- /* no op */
-}
-
-
-void
-_mesa_init_fbobjects(struct gl_context *ctx)
-{
- _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
- _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
- _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
- DummyFramebuffer.Delete = delete_dummy_framebuffer;
- DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
- IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
-}
-
-struct gl_framebuffer *
-_mesa_get_incomplete_framebuffer(void)
-{
- return &IncompleteFramebuffer;
-}
-
-/**
- * Helper routine for getting a gl_renderbuffer.
- */
-struct gl_renderbuffer *
-_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
-{
- struct gl_renderbuffer *rb;
-
- if (id == 0)
- return NULL;
-
- rb = (struct gl_renderbuffer *)
- _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
- return rb;
-}
-
-
-/**
- * Helper routine for getting a gl_framebuffer.
- */
-struct gl_framebuffer *
-_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
-{
- struct gl_framebuffer *fb;
-
- if (id == 0)
- return NULL;
-
- fb = (struct gl_framebuffer *)
- _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
- return fb;
-}
-
-
-/**
- * Mark the given framebuffer as invalid. This will force the
- * test for framebuffer completeness to be done before the framebuffer
- * is used.
- */
-static void
-invalidate_framebuffer(struct gl_framebuffer *fb)
-{
- fb->_Status = 0; /* "indeterminate" */
-}
-
-
-/**
- * Return the gl_framebuffer object which corresponds to the given
- * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
- * Check support for GL_EXT_framebuffer_blit to determine if certain
- * targets are legal.
- * \return gl_framebuffer pointer or NULL if target is illegal
- */
-static struct gl_framebuffer *
-get_framebuffer_target(struct gl_context *ctx, GLenum target)
-{
- switch (target) {
- case GL_DRAW_FRAMEBUFFER:
- return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;
- case GL_READ_FRAMEBUFFER:
- return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;
- case GL_FRAMEBUFFER_EXT:
- return ctx->DrawBuffer;
- default:
- return NULL;
- }
-}
-
-
-/**
- * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
- * gl_renderbuffer_attachment object.
- * This function is only used for user-created FB objects, not the
- * default / window-system FB object.
- * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
- * the depth buffer attachment point.
- */
-struct gl_renderbuffer_attachment *
-_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
- GLenum attachment)
-{
- GLuint i;
-
- assert(fb->Name > 0);
-
- switch (attachment) {
- case GL_COLOR_ATTACHMENT0_EXT:
- case GL_COLOR_ATTACHMENT1_EXT:
- case GL_COLOR_ATTACHMENT2_EXT:
- case GL_COLOR_ATTACHMENT3_EXT:
- case GL_COLOR_ATTACHMENT4_EXT:
- case GL_COLOR_ATTACHMENT5_EXT:
- case GL_COLOR_ATTACHMENT6_EXT:
- case GL_COLOR_ATTACHMENT7_EXT:
- case GL_COLOR_ATTACHMENT8_EXT:
- case GL_COLOR_ATTACHMENT9_EXT:
- case GL_COLOR_ATTACHMENT10_EXT:
- case GL_COLOR_ATTACHMENT11_EXT:
- case GL_COLOR_ATTACHMENT12_EXT:
- case GL_COLOR_ATTACHMENT13_EXT:
- case GL_COLOR_ATTACHMENT14_EXT:
- case GL_COLOR_ATTACHMENT15_EXT:
- i = attachment - GL_COLOR_ATTACHMENT0_EXT;
- if (i >= ctx->Const.MaxColorAttachments) {
- return NULL;
- }
- return &fb->Attachment[BUFFER_COLOR0 + i];
- case GL_DEPTH_STENCIL_ATTACHMENT:
- /* fall-through */
- case GL_DEPTH_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_DEPTH_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_DEPTH];
- case GL_STENCIL_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_STENCIL_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_STENCIL];
- default:
- return NULL;
- }
-}
-
-
-/**
- * As above, but only used for getting attachments of the default /
- * window-system framebuffer (not user-created framebuffer objects).
- */
-static struct gl_renderbuffer_attachment *
-_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
- GLenum attachment)
-{
- assert(fb->Name == 0);
-
- switch (attachment) {
- case GL_FRONT_LEFT:
- return &fb->Attachment[BUFFER_FRONT_LEFT];
- case GL_FRONT_RIGHT:
- return &fb->Attachment[BUFFER_FRONT_RIGHT];
- case GL_BACK_LEFT:
- return &fb->Attachment[BUFFER_BACK_LEFT];
- case GL_BACK_RIGHT:
- return &fb->Attachment[BUFFER_BACK_RIGHT];
- case GL_AUX0:
- if (fb->Visual.numAuxBuffers == 1) {
- return &fb->Attachment[BUFFER_AUX0];
- }
- return NULL;
- case GL_DEPTH_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_DEPTH_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_DEPTH];
- case GL_STENCIL_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_STENCIL_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_STENCIL];
- default:
- return NULL;
- }
-}
-
-
-
-/**
- * Remove any texture or renderbuffer attached to the given attachment
- * point. Update reference counts, etc.
- */
-void
-_mesa_remove_attachment(struct gl_context *ctx,
- struct gl_renderbuffer_attachment *att)
-{
- if (att->Type == GL_TEXTURE) {
- ASSERT(att->Texture);
- if (ctx->Driver.FinishRenderTexture) {
- /* tell driver that we're done rendering to this texture. */
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
- ASSERT(!att->Texture);
- }
- if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
- ASSERT(!att->Texture);
- _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
- ASSERT(!att->Renderbuffer);
- }
- att->Type = GL_NONE;
- att->Complete = GL_TRUE;
-}
-
-
-/**
- * Bind a texture object to an attachment point.
- * The previous binding, if any, will be removed first.
- */
-void
-_mesa_set_texture_attachment(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer_attachment *att,
- struct gl_texture_object *texObj,
- GLenum texTarget, GLuint level, GLuint zoffset)
-{
- if (att->Texture == texObj) {
- /* re-attaching same texture */
- ASSERT(att->Type == GL_TEXTURE);
- if (ctx->Driver.FinishRenderTexture)
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- else {
- /* new attachment */
- if (ctx->Driver.FinishRenderTexture && att->Texture)
- ctx->Driver.FinishRenderTexture(ctx, att);
- _mesa_remove_attachment(ctx, att);
- att->Type = GL_TEXTURE;
- assert(!att->Texture);
- _mesa_reference_texobj(&att->Texture, texObj);
- }
-
- /* always update these fields */
- att->TextureLevel = level;
- att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
- att->Zoffset = zoffset;
- att->Complete = GL_FALSE;
-
- if (_mesa_get_attachment_teximage(att)) {
- ctx->Driver.RenderTexture(ctx, fb, att);
- }
-
- invalidate_framebuffer(fb);
-}
-
-
-/**
- * Bind a renderbuffer to an attachment point.
- * The previous binding, if any, will be removed first.
- */
-void
-_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
- struct gl_renderbuffer_attachment *att,
- struct gl_renderbuffer *rb)
-{
- /* XXX check if re-doing same attachment, exit early */
- _mesa_remove_attachment(ctx, att);
- att->Type = GL_RENDERBUFFER_EXT;
- att->Texture = NULL; /* just to be safe */
- att->Complete = GL_FALSE;
- _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
-}
-
-
-/**
- * Fallback for ctx->Driver.FramebufferRenderbuffer()
- * Attach a renderbuffer object to a framebuffer object.
- */
-void
-_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLenum attachment, struct gl_renderbuffer *rb)
-{
- struct gl_renderbuffer_attachment *att;
-
- _glthread_LOCK_MUTEX(fb->Mutex);
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- ASSERT(att);
- if (rb) {
- _mesa_set_renderbuffer_attachment(ctx, att, rb);
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
- /* do stencil attachment here (depth already done above) */
- att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
- assert(att);
- _mesa_set_renderbuffer_attachment(ctx, att, rb);
- }
- rb->AttachedAnytime = GL_TRUE;
- }
- else {
- _mesa_remove_attachment(ctx, att);
- }
-
- invalidate_framebuffer(fb);
-
- _glthread_UNLOCK_MUTEX(fb->Mutex);
-}
-
-
-/**
- * Fallback for ctx->Driver.ValidateFramebuffer()
- * Check if the renderbuffer's formats are supported by the software
- * renderer.
- * Drivers should probably override this.
- */
-void
-_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- gl_buffer_index buf;
- for (buf = 0; buf < BUFFER_COUNT; buf++) {
- const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
- if (rb) {
- switch (rb->_BaseFormat) {
- case GL_ALPHA:
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE:
- case GL_INTENSITY:
- case GL_RED:
- case GL_RG:
- fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
- return;
- default:
- /* render buffer format is supported by software rendering */
- ;
- }
- }
- }
-}
-
-
-/**
- * For debug only.
- */
-static void
-att_incomplete(const char *msg)
-{
-#if DEBUG_FBO
- _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
-#else
- (void) msg;
-#endif
-}
-
-
-/**
- * For debug only.
- */
-static void
-fbo_incomplete(const char *msg, int index)
-{
-#if DEBUG_FBO
- _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
-#else
- (void) msg;
- (void) index;
-#endif
-}
-
-
-/**
- * Is the given base format a legal format for a color renderbuffer?
- */
-GLboolean
-_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
-{
- switch (baseFormat) {
- case GL_RGB:
- case GL_RGBA:
- return GL_TRUE;
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- case GL_ALPHA:
- return ctx->Extensions.ARB_framebuffer_object;
- case GL_RED:
- case GL_RG:
- return ctx->Extensions.ARB_texture_rg;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Is the given base format a legal format for a depth/stencil renderbuffer?
- */
-static GLboolean
-is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
-{
- switch (baseFormat) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_STENCIL_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if an attachment point is complete and update its Complete field.
- * \param format if GL_COLOR, this is a color attachment point,
- * if GL_DEPTH, this is a depth component attachment point,
- * if GL_STENCIL, this is a stencil component attachment point.
- */
-static void
-test_attachment_completeness(const struct gl_context *ctx, GLenum format,
- struct gl_renderbuffer_attachment *att)
-{
- assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
-
- /* assume complete */
- att->Complete = GL_TRUE;
-
- /* Look for reasons why the attachment might be incomplete */
- if (att->Type == GL_TEXTURE) {
- const struct gl_texture_object *texObj = att->Texture;
- struct gl_texture_image *texImage;
- GLenum baseFormat;
-
- if (!texObj) {
- att_incomplete("no texobj");
- att->Complete = GL_FALSE;
- return;
- }
-
- texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
- if (!texImage) {
- att_incomplete("no teximage");
- att->Complete = GL_FALSE;
- return;
- }
- if (texImage->Width < 1 || texImage->Height < 1) {
- att_incomplete("teximage width/height=0");
- printf("texobj = %u\n", texObj->Name);
- printf("level = %d\n", att->TextureLevel);
- att->Complete = GL_FALSE;
- return;
- }
- if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
- att_incomplete("bad z offset");
- att->Complete = GL_FALSE;
- return;
- }
-
- baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
-
- if (format == GL_COLOR) {
- if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
- att_incomplete("bad format");
- att->Complete = GL_FALSE;
- return;
- }
- if (_mesa_is_format_compressed(texImage->TexFormat)) {
- att_incomplete("compressed internalformat");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else if (format == GL_DEPTH) {
- if (baseFormat == GL_DEPTH_COMPONENT) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- ctx->Extensions.ARB_depth_texture &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att->Complete = GL_FALSE;
- att_incomplete("bad depth format");
- return;
- }
- }
- else {
- ASSERT(format == GL_STENCIL);
- if (ctx->Extensions.EXT_packed_depth_stencil &&
- ctx->Extensions.ARB_depth_texture &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- /* no such thing as stencil-only textures */
- att_incomplete("illegal stencil texture");
- att->Complete = GL_FALSE;
- return;
- }
- }
- }
- else if (att->Type == GL_RENDERBUFFER_EXT) {
- const GLenum baseFormat =
- _mesa_get_format_base_format(att->Renderbuffer->Format);
-
- ASSERT(att->Renderbuffer);
- if (!att->Renderbuffer->InternalFormat ||
- att->Renderbuffer->Width < 1 ||
- att->Renderbuffer->Height < 1) {
- att_incomplete("0x0 renderbuffer");
- att->Complete = GL_FALSE;
- return;
- }
- if (format == GL_COLOR) {
- if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
- att_incomplete("bad renderbuffer color format");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else if (format == GL_DEPTH) {
- if (baseFormat == GL_DEPTH_COMPONENT) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att_incomplete("bad renderbuffer depth format");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else {
- assert(format == GL_STENCIL);
- if (baseFormat == GL_STENCIL_INDEX) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att->Complete = GL_FALSE;
- att_incomplete("bad renderbuffer stencil format");
- return;
- }
- }
- }
- else {
- ASSERT(att->Type == GL_NONE);
- /* complete */
- return;
- }
-}
-
-
-/**
- * Test if the given framebuffer object is complete and update its
- * Status field with the results.
- * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
- * driver to make hardware-specific validation/completeness checks.
- * Also update the framebuffer's Width and Height fields if the
- * framebuffer is complete.
- */
-void
-_mesa_test_framebuffer_completeness(struct gl_context *ctx,
- struct gl_framebuffer *fb)
-{
- GLuint numImages;
- GLenum intFormat = GL_NONE; /* color buffers' internal format */
- GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
- GLint numSamples = -1;
- GLint i;
- GLuint j;
-
- assert(fb->Name != 0);
-
- numImages = 0;
- fb->Width = 0;
- fb->Height = 0;
-
- /* Start at -2 to more easily loop over all attachment points.
- * -2: depth buffer
- * -1: stencil buffer
- * >=0: color buffer
- */
- for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
- struct gl_renderbuffer_attachment *att;
- GLenum f;
- gl_format attFormat;
-
- /*
- * XXX for ARB_fbo, only check color buffers that are named by
- * GL_READ_BUFFER and GL_DRAW_BUFFERi.
- */
-
- /* check for attachment completeness
- */
- if (i == -2) {
- att = &fb->Attachment[BUFFER_DEPTH];
- test_attachment_completeness(ctx, GL_DEPTH, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("depth attachment incomplete", -1);
- return;
- }
- }
- else if (i == -1) {
- att = &fb->Attachment[BUFFER_STENCIL];
- test_attachment_completeness(ctx, GL_STENCIL, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("stencil attachment incomplete", -1);
- return;
- }
- }
- else {
- att = &fb->Attachment[BUFFER_COLOR0 + i];
- test_attachment_completeness(ctx, GL_COLOR, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("color attachment incomplete", i);
- return;
- }
- }
-
- /* get width, height, format of the renderbuffer/texture
- */
- if (att->Type == GL_TEXTURE) {
- const struct gl_texture_image *texImg =
- _mesa_get_attachment_teximage(att);
- minWidth = MIN2(minWidth, texImg->Width);
- maxWidth = MAX2(maxWidth, texImg->Width);
- minHeight = MIN2(minHeight, texImg->Height);
- maxHeight = MAX2(maxHeight, texImg->Height);
- f = texImg->_BaseFormat;
- attFormat = texImg->TexFormat;
- numImages++;
- if (!_mesa_is_legal_color_format(ctx, f) &&
- !is_legal_depth_format(ctx, f)) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
- fbo_incomplete("texture attachment incomplete", -1);
- return;
- }
- }
- else if (att->Type == GL_RENDERBUFFER_EXT) {
- minWidth = MIN2(minWidth, att->Renderbuffer->Width);
- maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
- minHeight = MIN2(minHeight, att->Renderbuffer->Height);
- maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
- f = att->Renderbuffer->InternalFormat;
- attFormat = att->Renderbuffer->Format;
- numImages++;
- }
- else {
- assert(att->Type == GL_NONE);
- continue;
- }
-
- if (att->Renderbuffer && numSamples < 0) {
- /* first buffer */
- numSamples = att->Renderbuffer->NumSamples;
- }
-
- /* check if integer color */
- fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
-
- /* Error-check width, height, format, samples
- */
- if (numImages == 1) {
- /* save format, num samples */
- if (i >= 0) {
- intFormat = f;
- }
- }
- else {
- if (!ctx->Extensions.ARB_framebuffer_object) {
- /* check that width, height, format are same */
- if (minWidth != maxWidth || minHeight != maxHeight) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
- fbo_incomplete("width or height mismatch", -1);
- return;
- }
- /* check that all color buffer have same format */
- if (intFormat != GL_NONE && f != intFormat) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
- fbo_incomplete("format mismatch", -1);
- return;
- }
- }
- if (att->Renderbuffer &&
- att->Renderbuffer->NumSamples != numSamples) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
- fbo_incomplete("inconsistant number of samples", i);
- return;
- }
-
- }
- }
-
-#if FEATURE_GL
- if (ctx->API == API_OPENGL) {
- /* Check that all DrawBuffers are present */
- for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
- if (fb->ColorDrawBuffer[j] != GL_NONE) {
- const struct gl_renderbuffer_attachment *att
- = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
- assert(att);
- if (att->Type == GL_NONE) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
- fbo_incomplete("missing drawbuffer", j);
- return;
- }
- }
- }
-
- /* Check that the ReadBuffer is present */
- if (fb->ColorReadBuffer != GL_NONE) {
- const struct gl_renderbuffer_attachment *att
- = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
- assert(att);
- if (att->Type == GL_NONE) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
- fbo_incomplete("missing readbuffer", -1);
- return;
- }
- }
- }
-#else
- (void) j;
-#endif
-
- if (numImages == 0) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
- fbo_incomplete("no attachments", -1);
- return;
- }
-
- /* Provisionally set status = COMPLETE ... */
- fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
-
- /* ... but the driver may say the FB is incomplete.
- * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
- * if anything.
- */
- if (ctx->Driver.ValidateFramebuffer) {
- ctx->Driver.ValidateFramebuffer(ctx, fb);
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- fbo_incomplete("driver marked FBO as incomplete", -1);
- }
- }
-
- if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
- /*
- * Note that if ARB_framebuffer_object is supported and the attached
- * renderbuffers/textures are different sizes, the framebuffer
- * width/height will be set to the smallest width/height.
- */
- fb->Width = minWidth;
- fb->Height = minHeight;
-
- /* finally, update the visual info for the framebuffer */
- _mesa_update_framebuffer_visual(ctx, fb);
- }
-}
-
-
-GLboolean GLAPIENTRY
-_mesa_IsRenderbufferEXT(GLuint renderbuffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
- if (renderbuffer) {
- struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (rb != NULL && rb != &DummyRenderbuffer)
- return GL_TRUE;
- }
- return GL_FALSE;
-}
-
-
-void GLAPIENTRY
-_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
-{
- struct gl_renderbuffer *newRb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
- return;
- }
-
- /* No need to flush here since the render buffer binding has no
- * effect on rendering state.
- */
-
- if (renderbuffer) {
- newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (newRb == &DummyRenderbuffer) {
- /* ID was reserved, but no real renderbuffer object made yet */
- newRb = NULL;
- }
- else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
- /* All RB IDs must be Gen'd */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
- return;
- }
-
- if (!newRb) {
- /* create new renderbuffer object */
- newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
- if (!newRb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
- return;
- }
- ASSERT(newRb->AllocStorage);
- _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
- newRb->RefCount = 1; /* referenced by hash table */
- }
- }
- else {
- newRb = NULL;
- }
-
- ASSERT(newRb != &DummyRenderbuffer);
-
- _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
-}
-
-
-/**
- * If the given renderbuffer is anywhere attached to the framebuffer, detach
- * the renderbuffer.
- * This is used when a renderbuffer object is deleted.
- * The spec calls for unbinding.
- */
-static void
-detach_renderbuffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer *rb)
-{
- GLuint i;
- for (i = 0; i < BUFFER_COUNT; i++) {
- if (fb->Attachment[i].Renderbuffer == rb) {
- _mesa_remove_attachment(ctx, &fb->Attachment[i]);
- }
- }
- invalidate_framebuffer(fb);
-}
-
-
-void GLAPIENTRY
-_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
-{
- GLint i;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- for (i = 0; i < n; i++) {
- if (renderbuffers[i] > 0) {
- struct gl_renderbuffer *rb;
- rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
- if (rb) {
- /* check if deleting currently bound renderbuffer object */
- if (rb == ctx->CurrentRenderbuffer) {
- /* bind default */
- ASSERT(rb->RefCount >= 2);
- _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
- }
-
- if (ctx->DrawBuffer->Name) {
- detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
- }
- if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
- detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
- }
-
- /* Remove from hash table immediately, to free the ID.
- * But the object will not be freed until it's no longer
- * referenced anywhere else.
- */
- _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
-
- if (rb != &DummyRenderbuffer) {
- /* no longer referenced by hash table */
- _mesa_reference_renderbuffer(&rb, NULL);
- }
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
- return;
- }
-
- if (!renderbuffers)
- return;
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
-
- for (i = 0; i < n; i++) {
- GLuint name = first + i;
- renderbuffers[i] = name;
- /* insert dummy placeholder into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- }
-}
-
-
-/**
- * Given an internal format token for a render buffer, return the
- * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
- * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
- * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
- *
- * This is similar to _mesa_base_tex_format() but the set of valid
- * internal formats is different.
- *
- * Note that even if a format is determined to be legal here, validation
- * of the FBO may fail if the format is not supported by the driver/GPU.
- *
- * \param internalFormat as passed to glRenderbufferStorage()
- * \return the base internal format, or 0 if internalFormat is illegal
- */
-GLenum
-_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
-{
- /*
- * Notes: some formats such as alpha, luminance, etc. were added
- * with GL_ARB_framebuffer_object.
- */
- switch (internalFormat) {
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA8:
- case GL_ALPHA12:
- case GL_ALPHA16:
- return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
- case GL_LUMINANCE:
- case GL_LUMINANCE4:
- case GL_LUMINANCE8:
- case GL_LUMINANCE12:
- case GL_LUMINANCE16:
- return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE4_ALPHA4:
- case GL_LUMINANCE6_ALPHA2:
- case GL_LUMINANCE8_ALPHA8:
- case GL_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
- return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
- case GL_INTENSITY:
- case GL_INTENSITY4:
- case GL_INTENSITY8:
- case GL_INTENSITY12:
- case GL_INTENSITY16:
- return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
- case GL_RGB:
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- case GL_SRGB8_EXT:
- return GL_RGB;
- case GL_RGBA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- case GL_SRGB8_ALPHA8_EXT:
- return GL_RGBA;
- case GL_STENCIL_INDEX:
- case GL_STENCIL_INDEX1_EXT:
- case GL_STENCIL_INDEX4_EXT:
- case GL_STENCIL_INDEX8_EXT:
- case GL_STENCIL_INDEX16_EXT:
- return GL_STENCIL_INDEX;
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT16:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- return GL_DEPTH_COMPONENT;
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- if (ctx->Extensions.EXT_packed_depth_stencil)
- return GL_DEPTH_STENCIL_EXT;
- else
- return 0;
- case GL_RED:
- case GL_R8:
- case GL_R16:
- return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
- case GL_RG:
- case GL_RG8:
- case GL_RG16:
- return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
- /* signed normalized texture formats */
- case GL_RED_SNORM:
- case GL_R8_SNORM:
- case GL_R16_SNORM:
- return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
- case GL_RG_SNORM:
- case GL_RG8_SNORM:
- case GL_RG16_SNORM:
- return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
- case GL_RGB_SNORM:
- case GL_RGB8_SNORM:
- case GL_RGB16_SNORM:
- return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
- case GL_RGBA_SNORM:
- case GL_RGBA8_SNORM:
- case GL_RGBA16_SNORM:
- return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
- case GL_ALPHA_SNORM:
- case GL_ALPHA8_SNORM:
- case GL_ALPHA16_SNORM:
- return ctx->Extensions.EXT_texture_snorm &&
- ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
- case GL_LUMINANCE_SNORM:
- case GL_LUMINANCE8_SNORM:
- case GL_LUMINANCE16_SNORM:
- return ctx->Extensions.EXT_texture_snorm &&
- ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
- case GL_LUMINANCE_ALPHA_SNORM:
- case GL_LUMINANCE8_ALPHA8_SNORM:
- case GL_LUMINANCE16_ALPHA16_SNORM:
- return ctx->Extensions.EXT_texture_snorm &&
- ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
- case GL_INTENSITY_SNORM:
- case GL_INTENSITY8_SNORM:
- case GL_INTENSITY16_SNORM:
- return ctx->Extensions.EXT_texture_snorm &&
- ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
- /* XXX add floating point and integer formats eventually */
- default:
- return 0;
- }
-}
-
-
-/**
- * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
- */
-static void
-invalidate_rb(GLuint key, void *data, void *userData)
-{
- struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
- struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
-
- /* If this is a user-created FBO */
- if (fb->Name) {
- GLuint i;
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- if (att->Type == GL_RENDERBUFFER &&
- att->Renderbuffer == rb) {
- /* Mark fb status as indeterminate to force re-validation */
- fb->_Status = 0;
- return;
- }
- }
- }
-}
-
-
-/** sentinal value, see below */
-#define NO_SAMPLES 1000
-
-
-/**
- * Helper function used by _mesa_RenderbufferStorageEXT() and
- * _mesa_RenderbufferStorageMultisample().
- * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
- */
-static void
-renderbuffer_storage(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height, GLsizei samples)
-{
- const char *func = samples == NO_SAMPLES ?
- "glRenderbufferStorage" : "RenderbufferStorageMultisample";
- struct gl_renderbuffer *rb;
- GLenum baseFormat;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
- return;
- }
-
- baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
- if (baseFormat == 0) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
- return;
- }
-
- if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
- return;
- }
-
- if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
- return;
- }
-
- if (samples == NO_SAMPLES) {
- /* NumSamples == 0 indicates non-multisampling */
- samples = 0;
- }
- else if (samples > (GLsizei) ctx->Const.MaxSamples) {
- /* note: driver may choose to use more samples than what's requested */
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- if (rb->InternalFormat == internalFormat &&
- rb->Width == (GLuint) width &&
- rb->Height == (GLuint) height) {
- /* no change in allocation needed */
- return;
- }
-
- /* These MUST get set by the AllocStorage func */
- rb->Format = MESA_FORMAT_NONE;
- rb->NumSamples = samples;
-
- /* Now allocate the storage */
- ASSERT(rb->AllocStorage);
- if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
- /* No error - check/set fields now */
- assert(rb->Format != MESA_FORMAT_NONE);
- assert(rb->Width == (GLuint) width);
- assert(rb->Height == (GLuint) height);
- rb->InternalFormat = internalFormat;
- rb->_BaseFormat = baseFormat;
- assert(rb->_BaseFormat != 0);
- }
- else {
- /* Probably ran out of memory - clear the fields */
- rb->Width = 0;
- rb->Height = 0;
- rb->Format = MESA_FORMAT_NONE;
- rb->InternalFormat = GL_NONE;
- rb->_BaseFormat = GL_NONE;
- rb->NumSamples = 0;
- }
-
- /* Invalidate the framebuffers the renderbuffer is attached in. */
- if (rb->AttachedAnytime) {
- _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
- }
-}
-
-
-#if FEATURE_OES_EGL_image
-void GLAPIENTRY
-_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
-{
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (!ctx->Extensions.OES_EGL_image) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glEGLImageTargetRenderbufferStorageOES(unsupported)");
- return;
- }
-
- if (target != GL_RENDERBUFFER) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "EGLImageTargetRenderbufferStorageOES");
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "EGLImageTargetRenderbufferStorageOES");
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
-}
-#endif
-
-
-/**
- * Helper function for _mesa_GetRenderbufferParameterivEXT() and
- * _mesa_GetFramebufferAttachmentParameterivEXT()
- * We have to be careful to respect the base format. For example, if a
- * renderbuffer/texture was created with internalFormat=GL_RGB but the
- * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
- * we need to return zero.
- */
-static GLint
-get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
-{
- switch (pname) {
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
- baseFormat == GL_RG || baseFormat == GL_RED)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
- baseFormat == GL_LUMINANCE_ALPHA)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- default:
- return 0;
- }
-}
-
-
-
-void GLAPIENTRY
-_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- /* GL_ARB_fbo says calling this function is equivalent to calling
- * glRenderbufferStorageMultisample() with samples=0. We pass in
- * a token value here just for error reporting purposes.
- */
- renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
-}
-
-
-void GLAPIENTRY
-_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
- GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- renderbuffer_storage(target, internalFormat, width, height, samples);
-}
-
-
-/**
- * OpenGL ES version of glRenderBufferStorage.
- */
-void GLAPIENTRY
-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- switch (internalFormat) {
- case GL_RGB565:
- /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
- /* choose a closest format */
- internalFormat = GL_RGB5;
- break;
- default:
- break;
- }
-
- renderbuffer_storage(target, internalFormat, width, height, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
-{
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetRenderbufferParameterivEXT(target)");
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetRenderbufferParameterivEXT");
- return;
- }
-
- /* No need to flush here since we're just quering state which is
- * not effected by rendering.
- */
-
- switch (pname) {
- case GL_RENDERBUFFER_WIDTH_EXT:
- *params = rb->Width;
- return;
- case GL_RENDERBUFFER_HEIGHT_EXT:
- *params = rb->Height;
- return;
- case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
- *params = rb->InternalFormat;
- return;
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
- break;
- case GL_RENDERBUFFER_SAMPLES:
- if (ctx->Extensions.ARB_framebuffer_object) {
- *params = rb->NumSamples;
- break;
- }
- /* fallthrough */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetRenderbufferParameterivEXT(target)");
- return;
- }
-}
-
-
-GLboolean GLAPIENTRY
-_mesa_IsFramebufferEXT(GLuint framebuffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
- if (framebuffer) {
- struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
- if (rb != NULL && rb != &DummyFramebuffer)
- return GL_TRUE;
- }
- return GL_FALSE;
-}
-
-
-/**
- * Check if any of the attachments of the given framebuffer are textures
- * (render to texture). Call ctx->Driver.RenderTexture() for such
- * attachments.
- */
-static void
-check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- GLuint i;
- ASSERT(ctx->Driver.RenderTexture);
-
- if (fb->Name == 0)
- return; /* can't render to texture with winsys framebuffers */
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- if (att->Texture && _mesa_get_attachment_teximage(att)) {
- ctx->Driver.RenderTexture(ctx, fb, att);
- }
- }
-}
-
-
-/**
- * Examine all the framebuffer's attachments to see if any are textures.
- * If so, call ctx->Driver.FinishRenderTexture() for each texture to
- * notify the device driver that the texture image may have changed.
- */
-static void
-check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- if (fb->Name == 0)
- return; /* can't render to texture with winsys framebuffers */
-
- if (ctx->Driver.FinishRenderTexture) {
- GLuint i;
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- if (att->Texture && att->Renderbuffer) {
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
-{
- struct gl_framebuffer *newDrawFb, *newReadFb;
- struct gl_framebuffer *oldDrawFb, *oldReadFb;
- GLboolean bindReadBuf, bindDrawBuf;
- GET_CURRENT_CONTEXT(ctx);
-
-#ifdef DEBUG
- if (ctx->Extensions.ARB_framebuffer_object) {
- ASSERT(ctx->Extensions.EXT_framebuffer_object);
- ASSERT(ctx->Extensions.EXT_framebuffer_blit);
- }
-#endif
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (!ctx->Extensions.EXT_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBindFramebufferEXT(unsupported)");
- return;
- }
-
- switch (target) {
-#if FEATURE_EXT_framebuffer_blit
- case GL_DRAW_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
- bindDrawBuf = GL_TRUE;
- bindReadBuf = GL_FALSE;
- break;
- case GL_READ_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
- bindDrawBuf = GL_FALSE;
- bindReadBuf = GL_TRUE;
- break;
-#endif
- case GL_FRAMEBUFFER_EXT:
- bindDrawBuf = GL_TRUE;
- bindReadBuf = GL_TRUE;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
-
- if (framebuffer) {
- /* Binding a user-created framebuffer object */
- newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
- if (newDrawFb == &DummyFramebuffer) {
- /* ID was reserved, but no real framebuffer object made yet */
- newDrawFb = NULL;
- }
- else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
- /* All FBO IDs must be Gen'd */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
- return;
- }
-
- if (!newDrawFb) {
- /* create new framebuffer object */
- newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
- if (!newDrawFb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
- return;
- }
- _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
- }
- newReadFb = newDrawFb;
- }
- else {
- /* Binding the window system framebuffer (which was originally set
- * with MakeCurrent).
- */
- newDrawFb = ctx->WinSysDrawBuffer;
- newReadFb = ctx->WinSysReadBuffer;
- }
-
- ASSERT(newDrawFb);
- ASSERT(newDrawFb != &DummyFramebuffer);
-
- /* save pointers to current/old framebuffers */
- oldDrawFb = ctx->DrawBuffer;
- oldReadFb = ctx->ReadBuffer;
-
- /* check if really changing bindings */
- if (oldDrawFb == newDrawFb)
- bindDrawBuf = GL_FALSE;
- if (oldReadFb == newReadFb)
- bindReadBuf = GL_FALSE;
-
- /*
- * OK, now bind the new Draw/Read framebuffers, if they're changing.
- *
- * We also check if we're beginning and/or ending render-to-texture.
- * When a framebuffer with texture attachments is unbound, call
- * ctx->Driver.FinishRenderTexture().
- * When a framebuffer with texture attachments is bound, call
- * ctx->Driver.RenderTexture().
- *
- * Note that if the ReadBuffer has texture attachments we don't consider
- * that a render-to-texture case.
- */
- if (bindReadBuf) {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- /* check if old readbuffer was render-to-texture */
- check_end_texture_render(ctx, oldReadFb);
-
- _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
- }
-
- if (bindDrawBuf) {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- /* check if old read/draw buffers were render-to-texture */
- if (!bindReadBuf)
- check_end_texture_render(ctx, oldReadFb);
-
- if (oldDrawFb != oldReadFb)
- check_end_texture_render(ctx, oldDrawFb);
-
- /* check if newly bound framebuffer has any texture attachments */
- check_begin_texture_render(ctx, newDrawFb);
-
- _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
- }
-
- if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
- ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
- }
-}
-
-
-void GLAPIENTRY
-_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
-{
- GLint i;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- for (i = 0; i < n; i++) {
- if (framebuffers[i] > 0) {
- struct gl_framebuffer *fb;
- fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
- if (fb) {
- ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
-
- /* check if deleting currently bound framebuffer object */
- if (ctx->Extensions.EXT_framebuffer_blit) {
- /* separate draw/read binding points */
- if (fb == ctx->DrawBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
- }
- if (fb == ctx->ReadBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
- }
- }
- else {
- /* only one binding point for read/draw buffers */
- if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
- }
- }
-
- /* remove from hash table immediately, to free the ID */
- _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
-
- if (fb != &DummyFramebuffer) {
- /* But the object will not be freed until it's no longer
- * bound in any context.
- */
- _mesa_reference_framebuffer(&fb, NULL);
- }
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
- return;
- }
-
- if (!framebuffers)
- return;
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
-
- for (i = 0; i < n; i++) {
- GLuint name = first + i;
- framebuffers[i] = name;
- /* insert dummy placeholder into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- }
-}
-
-
-
-GLenum GLAPIENTRY
-_mesa_CheckFramebufferStatusEXT(GLenum target)
-{
- struct gl_framebuffer *buffer;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
-
- buffer = get_framebuffer_target(ctx, target);
- if (!buffer) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
- return 0;
- }
-
- if (buffer->Name == 0) {
- /* The window system / default framebuffer is always complete */
- return GL_FRAMEBUFFER_COMPLETE_EXT;
- }
-
- /* No need to flush here */
-
- if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
- _mesa_test_framebuffer_completeness(ctx, buffer);
- }
-
- return buffer->_Status;
-}
-
-
-
-/**
- * Common code called by glFramebufferTexture1D/2D/3DEXT().
- */
-static void
-framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
- GLenum attachment, GLenum textarget, GLuint texture,
- GLint level, GLint zoffset)
-{
- struct gl_renderbuffer_attachment *att;
- struct gl_texture_object *texObj = NULL;
- struct gl_framebuffer *fb;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- fb = get_framebuffer_target(ctx, target);
- if (!fb) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
- return;
- }
-
- /* check framebuffer binding */
- if (fb->Name == 0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT", caller);
- return;
- }
-
-
- /* The textarget, level, and zoffset parameters are only validated if
- * texture is non-zero.
- */
- if (texture) {
- GLboolean err = GL_TRUE;
-
- texObj = _mesa_lookup_texture(ctx, texture);
- if (texObj != NULL) {
- if (textarget == 0) {
- /* XXX what's the purpose of this? */
- err = (texObj->Target != GL_TEXTURE_3D) &&
- (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
- (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
- }
- else {
- err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
- ? !IS_CUBE_FACE(textarget)
- : (texObj->Target != textarget);
- }
- }
- else {
- /* can't render to a non-existant texture */
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT(non existant texture)",
- caller);
- return;
- }
-
- if (err) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT(texture target mismatch)",
- caller);
- return;
- }
-
- if (texObj->Target == GL_TEXTURE_3D) {
- const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
- if (zoffset < 0 || zoffset >= maxSize) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(zoffset)", caller);
- return;
- }
- }
- else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
- (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
- if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(layer)", caller);
- return;
- }
- }
-
- if ((level < 0) ||
- (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(level)", caller);
- return;
- }
- }
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture%sEXT(attachment)", caller);
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- _glthread_LOCK_MUTEX(fb->Mutex);
- if (texObj) {
- _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
- level, zoffset);
- /* Set the render-to-texture flag. We'll check this flag in
- * glTexImage() and friends to determine if we need to revalidate
- * any FBOs that might be rendering into this texture.
- * This flag never gets cleared since it's non-trivial to determine
- * when all FBOs might be done rendering to this texture. That's OK
- * though since it's uncommon to render to a texture then repeatedly
- * call glTexImage() to change images in the texture.
- */
- texObj->_RenderToTexture = GL_TRUE;
- }
- else {
- _mesa_remove_attachment(ctx, att);
- }
-
- invalidate_framebuffer(fb);
-
- _glthread_UNLOCK_MUTEX(fb->Mutex);
-}
-
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture1DEXT(textarget)");
- return;
- }
-
- framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
- level, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) &&
- (textarget != GL_TEXTURE_2D) &&
- (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
- (!IS_CUBE_FACE(textarget))) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
- return;
- }
-
- framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
- level, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture,
- GLint level, GLint zoffset)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture3DEXT(textarget)");
- return;
- }
-
- framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
- level, zoffset);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
- GLuint texture, GLint level, GLint layer)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
- level, layer);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
- GLenum renderbufferTarget,
- GLuint renderbuffer)
-{
- struct gl_renderbuffer_attachment *att;
- struct gl_framebuffer *fb;
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- fb = get_framebuffer_target(ctx, target);
- if (!fb) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
- return;
- }
-
- if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(renderbufferTarget)");
- return;
- }
-
- if (fb->Name == 0) {
- /* Can't attach new renderbuffers to a window system framebuffer */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
- return;
- }
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(invalid attachment %s)",
- _mesa_lookup_enum_by_nr(attachment));
- return;
- }
-
- if (renderbuffer) {
- rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferRenderbufferEXT(non-existant"
- " renderbuffer %u)", renderbuffer);
- return;
- }
- else if (rb == &DummyRenderbuffer) {
- /* This is what NVIDIA does */
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferRenderbufferEXT(renderbuffer %u)",
- renderbuffer);
- return;
- }
- }
- else {
- /* remove renderbuffer attachment */
- rb = NULL;
- }
-
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
- rb && rb->Format != MESA_FORMAT_NONE) {
- /* make sure the renderbuffer is a depth/stencil format */
- const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
- if (baseFormat != GL_DEPTH_STENCIL) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferRenderbufferEXT(renderbuffer"
- " is not DEPTH_STENCIL format)");
- return;
- }
- }
-
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- assert(ctx->Driver.FramebufferRenderbuffer);
- ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
-
- /* Some subsequent GL commands may depend on the framebuffer's visual
- * after the binding is updated. Update visual info now.
- */
- _mesa_update_framebuffer_visual(ctx, fb);
-}
-
-
-void GLAPIENTRY
-_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
- GLenum pname, GLint *params)
-{
- const struct gl_renderbuffer_attachment *att;
- struct gl_framebuffer *buffer;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- buffer = get_framebuffer_target(ctx, target);
- if (!buffer) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(target)");
- return;
- }
-
- if (buffer->Name == 0) {
- /* the default / window-system FBO */
- att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
- }
- else {
- /* user-created framebuffer FBO */
- att = _mesa_get_attachment(ctx, buffer, attachment);
- }
-
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(attachment)");
- return;
- }
-
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
- /* the depth and stencil attachments must point to the same buffer */
- const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
- depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
- stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
- if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
- " attachments differ)");
- return;
- }
- }
-
- /* No need to flush here */
-
- switch (pname) {
- case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
- *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
- if (att->Type == GL_RENDERBUFFER_EXT) {
- *params = att->Renderbuffer->Name;
- }
- else if (att->Type == GL_TEXTURE) {
- *params = att->Texture->Name;
- }
- else {
- assert(att->Type == GL_NONE);
- *params = 0;
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
- if (att->Type == GL_TEXTURE) {
- *params = att->TextureLevel;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
- if (att->Type == GL_TEXTURE) {
- if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
- *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
- }
- else {
- *params = 0;
- }
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
- if (att->Type == GL_TEXTURE) {
- if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
- *params = att->Zoffset;
- }
- else {
- *params = 0;
- }
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- else {
- if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
- *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
- }
- else {
- /* According to ARB_framebuffer_sRGB, we should return LINEAR
- * if the sRGB conversion is unsupported. */
- *params = GL_LINEAR;
- }
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- return;
- }
- else {
- gl_format format = att->Renderbuffer->Format;
- if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
- /* special cases */
- *params = GL_INDEX;
- }
- else {
- *params = _mesa_get_format_datatype(format);
- }
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- else if (att->Texture) {
- const struct gl_texture_image *texImage =
- _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
- att->TextureLevel);
- if (texImage) {
- *params = get_component_bits(pname, texImage->_BaseFormat,
- texImage->TexFormat);
- }
- else {
- *params = 0;
- }
- }
- else if (att->Renderbuffer) {
- *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
- att->Renderbuffer->Format);
- }
- else {
- *params = 0;
- }
- return;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- return;
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenerateMipmapEXT(GLenum target)
-{
- struct gl_texture_object *texObj;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_TEXTURE_2D:
- case GL_TEXTURE_3D:
- case GL_TEXTURE_CUBE_MAP:
- /* OK, legal value */
- break;
- default:
- /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
- _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
- return;
- }
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- if (texObj->BaseLevel >= texObj->MaxLevel) {
- /* nothing to do */
- return;
- }
-
- if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
- !_mesa_cube_complete(texObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGenerateMipmap(incomplete cube map)");
- return;
- }
-
- _mesa_lock_texture(ctx, texObj);
- if (target == GL_TEXTURE_CUBE_MAP) {
- GLuint face;
- for (face = 0; face < 6; face++)
- ctx->Driver.GenerateMipmap(ctx,
- GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
- texObj);
- }
- else {
- ctx->Driver.GenerateMipmap(ctx, target, texObj);
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-#if FEATURE_EXT_framebuffer_blit
-
-static const struct gl_renderbuffer_attachment *
-find_attachment(const struct gl_framebuffer *fb,
- const struct gl_renderbuffer *rb)
-{
- GLuint i;
- for (i = 0; i < Elements(fb->Attachment); i++) {
- if (fb->Attachment[i].Renderbuffer == rb)
- return &fb->Attachment[i];
- }
- return NULL;
-}
-
-
-
-/**
- * Blit rectangular region, optionally from one framebuffer to another.
- *
- * Note, if the src buffer is multisampled and the dest is not, this is
- * when the samples must be resolved to a single color.
- */
-void GLAPIENTRY
-_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
- GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
- GLbitfield mask, GLenum filter)
-{
- const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
- GL_DEPTH_BUFFER_BIT |
- GL_STENCIL_BUFFER_BIT);
- const struct gl_framebuffer *readFb, *drawFb;
- const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx,
- "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, _mesa_lookup_enum_by_nr(filter));
-
- if (ctx->NewState) {
- _mesa_update_state(ctx);
- }
-
- readFb = ctx->ReadBuffer;
- drawFb = ctx->DrawBuffer;
-
- if (!readFb || !drawFb) {
- /* This will normally never happen but someday we may want to
- * support MakeCurrent() with no drawables.
- */
- return;
- }
-
- /* check for complete framebuffers */
- if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
- readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glBlitFramebufferEXT(incomplete draw/read buffers)");
- return;
- }
-
- if (filter != GL_NEAREST && filter != GL_LINEAR) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
- return;
- }
-
- if (mask & ~legalMaskBits) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
- return;
- }
-
- /* depth/stencil must be blitted with nearest filtering */
- if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
- && filter != GL_NEAREST) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
- return;
- }
-
- /* get color read/draw renderbuffers */
- if (mask & GL_COLOR_BUFFER_BIT) {
- colorReadRb = readFb->_ColorReadBuffer;
- colorDrawRb = drawFb->_ColorDrawBuffers[0];
- }
- else {
- colorReadRb = colorDrawRb = NULL;
- }
-
- if (mask & GL_STENCIL_BUFFER_BIT) {
- struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
- struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
- if (!readRb ||
- !drawRb ||
- _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
- _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(stencil buffer size mismatch)");
- return;
- }
- }
-
- if (mask & GL_DEPTH_BUFFER_BIT) {
- struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
- struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
- if (!readRb ||
- !drawRb ||
- _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
- _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(depth buffer size mismatch)");
- return;
- }
- }
-
- if (readFb->Visual.samples > 0 &&
- drawFb->Visual.samples > 0 &&
- readFb->Visual.samples != drawFb->Visual.samples) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(mismatched samples");
- return;
- }
-
- /* extra checks for multisample copies... */
- if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
- /* src and dest region sizes must be the same */
- if (srcX1 - srcX0 != dstX1 - dstX0 ||
- srcY1 - srcY0 != dstY1 - dstY0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
- return;
- }
-
- /* color formats must match */
- if (colorReadRb &&
- colorDrawRb &&
- colorReadRb->Format != colorDrawRb->Format) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
- return;
- }
- }
-
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
- return;
- }
-
- /* Debug code */
- if (DEBUG_BLIT) {
- printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
- " 0x%x, 0x%x)\n",
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, filter);
- if (colorReadRb) {
- const struct gl_renderbuffer_attachment *att;
-
- att = find_attachment(readFb, colorReadRb);
- printf(" Src FBO %u RB %u (%dx%d) ",
- readFb->Name, colorReadRb->Name,
- colorReadRb->Width, colorReadRb->Height);
- if (att && att->Texture) {
- printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
- }
- printf("\n");
-
- att = find_attachment(drawFb, colorDrawRb);
- printf(" Dst FBO %u RB %u (%dx%d) ",
- drawFb->Name, colorDrawRb->Name,
- colorDrawRb->Width, colorDrawRb->Height);
- if (att && att->Texture) {
- printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
- }
- printf("\n");
- }
- }
-
- ASSERT(ctx->Driver.BlitFramebuffer);
- ctx->Driver.BlitFramebuffer(ctx,
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, filter);
-}
-#endif /* FEATURE_EXT_framebuffer_blit */
-
-#if FEATURE_ARB_geometry_shader4
-void GLAPIENTRY
-_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
- GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTextureARB "
- "not implemented!");
-}
-
-void GLAPIENTRY
-_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
- GLuint texture, GLint level, GLenum face)
-{
- GET_CURRENT_CONTEXT(ctx);
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTextureFaceARB "
- "not implemented!");
-}
-#endif /* FEATURE_ARB_geometry_shader4 */
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.1
+ *
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * GL_EXT/ARB_framebuffer_object extensions
+ *
+ * Authors:
+ * Brian Paul
+ */
+
+
+#include "buffers.h"
+#include "context.h"
+#include "enums.h"
+#include "fbobject.h"
+#include "formats.h"
+#include "framebuffer.h"
+#include "hash.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "renderbuffer.h"
+#include "state.h"
+#include "teximage.h"
+#include "texobj.h"
+
+
+/** Set this to 1 to help debug FBO incompleteness problems */
+#define DEBUG_FBO 0
+
+/** Set this to 1 to debug/log glBlitFramebuffer() calls */
+#define DEBUG_BLIT 0
+
+
+/**
+ * Notes:
+ *
+ * None of the GL_EXT_framebuffer_object functions are compiled into
+ * display lists.
+ */
+
+
+
+/*
+ * When glGenRender/FramebuffersEXT() is called we insert pointers to
+ * these placeholder objects into the hash table.
+ * Later, when the object ID is first bound, we replace the placeholder
+ * with the real frame/renderbuffer.
+ */
+static struct gl_framebuffer DummyFramebuffer;
+static struct gl_renderbuffer DummyRenderbuffer;
+
+/* We bind this framebuffer when applications pass a NULL
+ * drawable/surface in make current. */
+static struct gl_framebuffer IncompleteFramebuffer;
+
+
+#define IS_CUBE_FACE(TARGET) \
+ ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
+ (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
+
+
+static void
+delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
+{
+ /* no op */
+}
+
+static void
+delete_dummy_framebuffer(struct gl_framebuffer *fb)
+{
+ /* no op */
+}
+
+
+void
+_mesa_init_fbobjects(struct gl_context *ctx)
+{
+ _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
+ _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
+ _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
+ DummyFramebuffer.Delete = delete_dummy_framebuffer;
+ DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
+ IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
+}
+
+struct gl_framebuffer *
+_mesa_get_incomplete_framebuffer(void)
+{
+ return &IncompleteFramebuffer;
+}
+
+/**
+ * Helper routine for getting a gl_renderbuffer.
+ */
+struct gl_renderbuffer *
+_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
+{
+ struct gl_renderbuffer *rb;
+
+ if (id == 0)
+ return NULL;
+
+ rb = (struct gl_renderbuffer *)
+ _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
+ return rb;
+}
+
+
+/**
+ * Helper routine for getting a gl_framebuffer.
+ */
+struct gl_framebuffer *
+_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
+{
+ struct gl_framebuffer *fb;
+
+ if (id == 0)
+ return NULL;
+
+ fb = (struct gl_framebuffer *)
+ _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
+ return fb;
+}
+
+
+/**
+ * Mark the given framebuffer as invalid. This will force the
+ * test for framebuffer completeness to be done before the framebuffer
+ * is used.
+ */
+static void
+invalidate_framebuffer(struct gl_framebuffer *fb)
+{
+ fb->_Status = 0; /* "indeterminate" */
+}
+
+
+/**
+ * Return the gl_framebuffer object which corresponds to the given
+ * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
+ * Check support for GL_EXT_framebuffer_blit to determine if certain
+ * targets are legal.
+ * \return gl_framebuffer pointer or NULL if target is illegal
+ */
+static struct gl_framebuffer *
+get_framebuffer_target(struct gl_context *ctx, GLenum target)
+{
+ switch (target) {
+ case GL_DRAW_FRAMEBUFFER:
+ return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;
+ case GL_READ_FRAMEBUFFER:
+ return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;
+ case GL_FRAMEBUFFER_EXT:
+ return ctx->DrawBuffer;
+ default:
+ return NULL;
+ }
+}
+
+
+/**
+ * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
+ * gl_renderbuffer_attachment object.
+ * This function is only used for user-created FB objects, not the
+ * default / window-system FB object.
+ * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
+ * the depth buffer attachment point.
+ */
+struct gl_renderbuffer_attachment *
+_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLenum attachment)
+{
+ GLuint i;
+
+ assert(fb->Name > 0);
+
+ switch (attachment) {
+ case GL_COLOR_ATTACHMENT0_EXT:
+ case GL_COLOR_ATTACHMENT1_EXT:
+ case GL_COLOR_ATTACHMENT2_EXT:
+ case GL_COLOR_ATTACHMENT3_EXT:
+ case GL_COLOR_ATTACHMENT4_EXT:
+ case GL_COLOR_ATTACHMENT5_EXT:
+ case GL_COLOR_ATTACHMENT6_EXT:
+ case GL_COLOR_ATTACHMENT7_EXT:
+ case GL_COLOR_ATTACHMENT8_EXT:
+ case GL_COLOR_ATTACHMENT9_EXT:
+ case GL_COLOR_ATTACHMENT10_EXT:
+ case GL_COLOR_ATTACHMENT11_EXT:
+ case GL_COLOR_ATTACHMENT12_EXT:
+ case GL_COLOR_ATTACHMENT13_EXT:
+ case GL_COLOR_ATTACHMENT14_EXT:
+ case GL_COLOR_ATTACHMENT15_EXT:
+ i = attachment - GL_COLOR_ATTACHMENT0_EXT;
+ if (i >= ctx->Const.MaxColorAttachments) {
+ return NULL;
+ }
+ return &fb->Attachment[BUFFER_COLOR0 + i];
+ case GL_DEPTH_STENCIL_ATTACHMENT:
+ /* fall-through */
+ case GL_DEPTH_BUFFER:
+ /* fall-through / new in GL 3.0 */
+ case GL_DEPTH_ATTACHMENT_EXT:
+ return &fb->Attachment[BUFFER_DEPTH];
+ case GL_STENCIL_BUFFER:
+ /* fall-through / new in GL 3.0 */
+ case GL_STENCIL_ATTACHMENT_EXT:
+ return &fb->Attachment[BUFFER_STENCIL];
+ default:
+ return NULL;
+ }
+}
+
+
+/**
+ * As above, but only used for getting attachments of the default /
+ * window-system framebuffer (not user-created framebuffer objects).
+ */
+static struct gl_renderbuffer_attachment *
+_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLenum attachment)
+{
+ assert(fb->Name == 0);
+
+ switch (attachment) {
+ case GL_FRONT_LEFT:
+ return &fb->Attachment[BUFFER_FRONT_LEFT];
+ case GL_FRONT_RIGHT:
+ return &fb->Attachment[BUFFER_FRONT_RIGHT];
+ case GL_BACK_LEFT:
+ return &fb->Attachment[BUFFER_BACK_LEFT];
+ case GL_BACK_RIGHT:
+ return &fb->Attachment[BUFFER_BACK_RIGHT];
+ case GL_AUX0:
+ if (fb->Visual.numAuxBuffers == 1) {
+ return &fb->Attachment[BUFFER_AUX0];
+ }
+ return NULL;
+ case GL_DEPTH_BUFFER:
+ /* fall-through / new in GL 3.0 */
+ case GL_DEPTH_ATTACHMENT_EXT:
+ return &fb->Attachment[BUFFER_DEPTH];
+ case GL_STENCIL_BUFFER:
+ /* fall-through / new in GL 3.0 */
+ case GL_STENCIL_ATTACHMENT_EXT:
+ return &fb->Attachment[BUFFER_STENCIL];
+ default:
+ return NULL;
+ }
+}
+
+
+
+/**
+ * Remove any texture or renderbuffer attached to the given attachment
+ * point. Update reference counts, etc.
+ */
+void
+_mesa_remove_attachment(struct gl_context *ctx,
+ struct gl_renderbuffer_attachment *att)
+{
+ if (att->Type == GL_TEXTURE) {
+ ASSERT(att->Texture);
+ if (ctx->Driver.FinishRenderTexture) {
+ /* tell driver that we're done rendering to this texture. */
+ ctx->Driver.FinishRenderTexture(ctx, att);
+ }
+ _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
+ ASSERT(!att->Texture);
+ }
+ if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
+ ASSERT(!att->Texture);
+ _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
+ ASSERT(!att->Renderbuffer);
+ }
+ att->Type = GL_NONE;
+ att->Complete = GL_TRUE;
+}
+
+
+/**
+ * Bind a texture object to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_texture_attachment(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ struct gl_renderbuffer_attachment *att,
+ struct gl_texture_object *texObj,
+ GLenum texTarget, GLuint level, GLuint zoffset)
+{
+ if (att->Texture == texObj) {
+ /* re-attaching same texture */
+ ASSERT(att->Type == GL_TEXTURE);
+ if (ctx->Driver.FinishRenderTexture)
+ ctx->Driver.FinishRenderTexture(ctx, att);
+ }
+ else {
+ /* new attachment */
+ if (ctx->Driver.FinishRenderTexture && att->Texture)
+ ctx->Driver.FinishRenderTexture(ctx, att);
+ _mesa_remove_attachment(ctx, att);
+ att->Type = GL_TEXTURE;
+ assert(!att->Texture);
+ _mesa_reference_texobj(&att->Texture, texObj);
+ }
+
+ /* always update these fields */
+ att->TextureLevel = level;
+ att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
+ att->Zoffset = zoffset;
+ att->Complete = GL_FALSE;
+
+ if (_mesa_get_attachment_teximage(att)) {
+ ctx->Driver.RenderTexture(ctx, fb, att);
+ }
+
+ invalidate_framebuffer(fb);
+}
+
+
+/**
+ * Bind a renderbuffer to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
+ struct gl_renderbuffer_attachment *att,
+ struct gl_renderbuffer *rb)
+{
+ /* XXX check if re-doing same attachment, exit early */
+ _mesa_remove_attachment(ctx, att);
+ att->Type = GL_RENDERBUFFER_EXT;
+ att->Texture = NULL; /* just to be safe */
+ att->Complete = GL_FALSE;
+ _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
+}
+
+
+/**
+ * Fallback for ctx->Driver.FramebufferRenderbuffer()
+ * Attach a renderbuffer object to a framebuffer object.
+ */
+void
+_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ GLenum attachment, struct gl_renderbuffer *rb)
+{
+ struct gl_renderbuffer_attachment *att;
+
+ _glthread_LOCK_MUTEX(fb->Mutex);
+
+ att = _mesa_get_attachment(ctx, fb, attachment);
+ ASSERT(att);
+ if (rb) {
+ _mesa_set_renderbuffer_attachment(ctx, att, rb);
+ if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+ /* do stencil attachment here (depth already done above) */
+ att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
+ assert(att);
+ _mesa_set_renderbuffer_attachment(ctx, att, rb);
+ }
+ rb->AttachedAnytime = GL_TRUE;
+ }
+ else {
+ _mesa_remove_attachment(ctx, att);
+ }
+
+ invalidate_framebuffer(fb);
+
+ _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+/**
+ * Fallback for ctx->Driver.ValidateFramebuffer()
+ * Check if the renderbuffer's formats are supported by the software
+ * renderer.
+ * Drivers should probably override this.
+ */
+void
+_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ gl_buffer_index buf;
+ for (buf = 0; buf < BUFFER_COUNT; buf++) {
+ const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
+ if (rb) {
+ switch (rb->_BaseFormat) {
+ case GL_ALPHA:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE:
+ case GL_INTENSITY:
+ case GL_RED:
+ case GL_RG:
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
+ return;
+ default:
+ /* render buffer format is supported by software rendering */
+ ;
+ }
+ }
+ }
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+att_incomplete(const char *msg)
+{
+#if DEBUG_FBO
+ _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
+#else
+ (void) msg;
+#endif
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+fbo_incomplete(const char *msg, int index)
+{
+#if DEBUG_FBO
+ _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
+#else
+ (void) msg;
+ (void) index;
+#endif
+}
+
+
+/**
+ * Is the given base format a legal format for a color renderbuffer?
+ */
+GLboolean
+_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+ switch (baseFormat) {
+ case GL_RGB:
+ case GL_RGBA:
+ return GL_TRUE;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_INTENSITY:
+ case GL_ALPHA:
+ return ctx->Extensions.ARB_framebuffer_object;
+ case GL_RED:
+ case GL_RG:
+ return ctx->Extensions.ARB_texture_rg;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Is the given base format a legal format for a depth/stencil renderbuffer?
+ */
+static GLboolean
+is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+ switch (baseFormat) {
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_STENCIL_EXT:
+ return GL_TRUE;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Test if an attachment point is complete and update its Complete field.
+ * \param format if GL_COLOR, this is a color attachment point,
+ * if GL_DEPTH, this is a depth component attachment point,
+ * if GL_STENCIL, this is a stencil component attachment point.
+ */
+static void
+test_attachment_completeness(const struct gl_context *ctx, GLenum format,
+ struct gl_renderbuffer_attachment *att)
+{
+ assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
+
+ /* assume complete */
+ att->Complete = GL_TRUE;
+
+ /* Look for reasons why the attachment might be incomplete */
+ if (att->Type == GL_TEXTURE) {
+ const struct gl_texture_object *texObj = att->Texture;
+ struct gl_texture_image *texImage;
+ GLenum baseFormat;
+
+ if (!texObj) {
+ att_incomplete("no texobj");
+ att->Complete = GL_FALSE;
+ return;
+ }
+
+ texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
+ if (!texImage) {
+ att_incomplete("no teximage");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ if (texImage->Width < 1 || texImage->Height < 1) {
+ att_incomplete("teximage width/height=0");
+ printf("texobj = %u\n", texObj->Name);
+ printf("level = %d\n", att->TextureLevel);
+ att->Complete = GL_FALSE;
+ return;
+ }
+ if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
+ att_incomplete("bad z offset");
+ att->Complete = GL_FALSE;
+ return;
+ }
+
+ baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+
+ if (format == GL_COLOR) {
+ if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+ att_incomplete("bad format");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ if (_mesa_is_format_compressed(texImage->TexFormat)) {
+ att_incomplete("compressed internalformat");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ }
+ else if (format == GL_DEPTH) {
+ if (baseFormat == GL_DEPTH_COMPONENT) {
+ /* OK */
+ }
+ else if (ctx->Extensions.EXT_packed_depth_stencil &&
+ ctx->Extensions.ARB_depth_texture &&
+ baseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* OK */
+ }
+ else {
+ att->Complete = GL_FALSE;
+ att_incomplete("bad depth format");
+ return;
+ }
+ }
+ else {
+ ASSERT(format == GL_STENCIL);
+ if (ctx->Extensions.EXT_packed_depth_stencil &&
+ ctx->Extensions.ARB_depth_texture &&
+ baseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* OK */
+ }
+ else {
+ /* no such thing as stencil-only textures */
+ att_incomplete("illegal stencil texture");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ }
+ }
+ else if (att->Type == GL_RENDERBUFFER_EXT) {
+ const GLenum baseFormat =
+ _mesa_get_format_base_format(att->Renderbuffer->Format);
+
+ ASSERT(att->Renderbuffer);
+ if (!att->Renderbuffer->InternalFormat ||
+ att->Renderbuffer->Width < 1 ||
+ att->Renderbuffer->Height < 1) {
+ att_incomplete("0x0 renderbuffer");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ if (format == GL_COLOR) {
+ if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+ att_incomplete("bad renderbuffer color format");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ }
+ else if (format == GL_DEPTH) {
+ if (baseFormat == GL_DEPTH_COMPONENT) {
+ /* OK */
+ }
+ else if (ctx->Extensions.EXT_packed_depth_stencil &&
+ baseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* OK */
+ }
+ else {
+ att_incomplete("bad renderbuffer depth format");
+ att->Complete = GL_FALSE;
+ return;
+ }
+ }
+ else {
+ assert(format == GL_STENCIL);
+ if (baseFormat == GL_STENCIL_INDEX) {
+ /* OK */
+ }
+ else if (ctx->Extensions.EXT_packed_depth_stencil &&
+ baseFormat == GL_DEPTH_STENCIL_EXT) {
+ /* OK */
+ }
+ else {
+ att->Complete = GL_FALSE;
+ att_incomplete("bad renderbuffer stencil format");
+ return;
+ }
+ }
+ }
+ else {
+ ASSERT(att->Type == GL_NONE);
+ /* complete */
+ return;
+ }
+}
+
+
+/**
+ * Test if the given framebuffer object is complete and update its
+ * Status field with the results.
+ * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
+ * driver to make hardware-specific validation/completeness checks.
+ * Also update the framebuffer's Width and Height fields if the
+ * framebuffer is complete.
+ */
+void
+_mesa_test_framebuffer_completeness(struct gl_context *ctx,
+ struct gl_framebuffer *fb)
+{
+ GLuint numImages;
+ GLenum intFormat = GL_NONE; /* color buffers' internal format */
+ GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
+ GLint numSamples = -1;
+ GLint i;
+ GLuint j;
+
+ assert(fb->Name != 0);
+
+ numImages = 0;
+ fb->Width = 0;
+ fb->Height = 0;
+
+ /* Start at -2 to more easily loop over all attachment points.
+ * -2: depth buffer
+ * -1: stencil buffer
+ * >=0: color buffer
+ */
+ for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
+ struct gl_renderbuffer_attachment *att;
+ GLenum f;
+ gl_format attFormat;
+
+ /*
+ * XXX for ARB_fbo, only check color buffers that are named by
+ * GL_READ_BUFFER and GL_DRAW_BUFFERi.
+ */
+
+ /* check for attachment completeness
+ */
+ if (i == -2) {
+ att = &fb->Attachment[BUFFER_DEPTH];
+ test_attachment_completeness(ctx, GL_DEPTH, att);
+ if (!att->Complete) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+ fbo_incomplete("depth attachment incomplete", -1);
+ return;
+ }
+ }
+ else if (i == -1) {
+ att = &fb->Attachment[BUFFER_STENCIL];
+ test_attachment_completeness(ctx, GL_STENCIL, att);
+ if (!att->Complete) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+ fbo_incomplete("stencil attachment incomplete", -1);
+ return;
+ }
+ }
+ else {
+ att = &fb->Attachment[BUFFER_COLOR0 + i];
+ test_attachment_completeness(ctx, GL_COLOR, att);
+ if (!att->Complete) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+ fbo_incomplete("color attachment incomplete", i);
+ return;
+ }
+ }
+
+ /* get width, height, format of the renderbuffer/texture
+ */
+ if (att->Type == GL_TEXTURE) {
+ const struct gl_texture_image *texImg =
+ _mesa_get_attachment_teximage(att);
+ minWidth = MIN2(minWidth, texImg->Width);
+ maxWidth = MAX2(maxWidth, texImg->Width);
+ minHeight = MIN2(minHeight, texImg->Height);
+ maxHeight = MAX2(maxHeight, texImg->Height);
+ f = texImg->_BaseFormat;
+ attFormat = texImg->TexFormat;
+ numImages++;
+ if (!_mesa_is_legal_color_format(ctx, f) &&
+ !is_legal_depth_format(ctx, f)) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+ fbo_incomplete("texture attachment incomplete", -1);
+ return;
+ }
+ }
+ else if (att->Type == GL_RENDERBUFFER_EXT) {
+ minWidth = MIN2(minWidth, att->Renderbuffer->Width);
+ maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
+ minHeight = MIN2(minHeight, att->Renderbuffer->Height);
+ maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
+ f = att->Renderbuffer->InternalFormat;
+ attFormat = att->Renderbuffer->Format;
+ numImages++;
+ }
+ else {
+ assert(att->Type == GL_NONE);
+ continue;
+ }
+
+ if (att->Renderbuffer && numSamples < 0) {
+ /* first buffer */
+ numSamples = att->Renderbuffer->NumSamples;
+ }
+
+ /* check if integer color */
+ fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
+
+ /* Error-check width, height, format, samples
+ */
+ if (numImages == 1) {
+ /* save format, num samples */
+ if (i >= 0) {
+ intFormat = f;
+ }
+ }
+ else {
+ if (!ctx->Extensions.ARB_framebuffer_object) {
+ /* check that width, height, format are same */
+ if (minWidth != maxWidth || minHeight != maxHeight) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
+ fbo_incomplete("width or height mismatch", -1);
+ return;
+ }
+ /* check that all color buffer have same format */
+ if (intFormat != GL_NONE && f != intFormat) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+ fbo_incomplete("format mismatch", -1);
+ return;
+ }
+ }
+ if (att->Renderbuffer &&
+ att->Renderbuffer->NumSamples != numSamples) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
+ fbo_incomplete("inconsistant number of samples", i);
+ return;
+ }
+
+ }
+ }
+
+#if FEATURE_GL
+ if (ctx->API == API_OPENGL) {
+ /* Check that all DrawBuffers are present */
+ for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
+ if (fb->ColorDrawBuffer[j] != GL_NONE) {
+ const struct gl_renderbuffer_attachment *att
+ = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
+ assert(att);
+ if (att->Type == GL_NONE) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
+ fbo_incomplete("missing drawbuffer", j);
+ return;
+ }
+ }
+ }
+
+ /* Check that the ReadBuffer is present */
+ if (fb->ColorReadBuffer != GL_NONE) {
+ const struct gl_renderbuffer_attachment *att
+ = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
+ assert(att);
+ if (att->Type == GL_NONE) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
+ fbo_incomplete("missing readbuffer", -1);
+ return;
+ }
+ }
+ }
+#else
+ (void) j;
+#endif
+
+ if (numImages == 0) {
+ fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+ fbo_incomplete("no attachments", -1);
+ return;
+ }
+
+ /* Provisionally set status = COMPLETE ... */
+ fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+
+ /* ... but the driver may say the FB is incomplete.
+ * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
+ * if anything.
+ */
+ if (ctx->Driver.ValidateFramebuffer) {
+ ctx->Driver.ValidateFramebuffer(ctx, fb);
+ if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ fbo_incomplete("driver marked FBO as incomplete", -1);
+ }
+ }
+
+ if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
+ /*
+ * Note that if ARB_framebuffer_object is supported and the attached
+ * renderbuffers/textures are different sizes, the framebuffer
+ * width/height will be set to the smallest width/height.
+ */
+ fb->Width = minWidth;
+ fb->Height = minHeight;
+
+ /* finally, update the visual info for the framebuffer */
+ _mesa_update_framebuffer_visual(ctx, fb);
+ }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsRenderbufferEXT(GLuint renderbuffer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+ if (renderbuffer) {
+ struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+ if (rb != NULL && rb != &DummyRenderbuffer)
+ return GL_TRUE;
+ }
+ return GL_FALSE;
+}
+
+
+void GLAPIENTRY
+_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
+{
+ struct gl_renderbuffer *newRb;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (target != GL_RENDERBUFFER_EXT) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
+ return;
+ }
+
+ /* No need to flush here since the render buffer binding has no
+ * effect on rendering state.
+ */
+
+ if (renderbuffer) {
+ newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+ if (newRb == &DummyRenderbuffer) {
+ /* ID was reserved, but no real renderbuffer object made yet */
+ newRb = NULL;
+ }
+ else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
+ /* All RB IDs must be Gen'd */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
+ return;
+ }
+
+ if (!newRb) {
+ /* create new renderbuffer object */
+ newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
+ if (!newRb) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
+ return;
+ }
+ ASSERT(newRb->AllocStorage);
+ _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
+ newRb->RefCount = 1; /* referenced by hash table */
+ }
+ }
+ else {
+ newRb = NULL;
+ }
+
+ ASSERT(newRb != &DummyRenderbuffer);
+
+ _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
+}
+
+
+/**
+ * If the given renderbuffer is anywhere attached to the framebuffer, detach
+ * the renderbuffer.
+ * This is used when a renderbuffer object is deleted.
+ * The spec calls for unbinding.
+ */
+static void
+detach_renderbuffer(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ struct gl_renderbuffer *rb)
+{
+ GLuint i;
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ if (fb->Attachment[i].Renderbuffer == rb) {
+ _mesa_remove_attachment(ctx, &fb->Attachment[i]);
+ }
+ }
+ invalidate_framebuffer(fb);
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
+{
+ GLint i;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ for (i = 0; i < n; i++) {
+ if (renderbuffers[i] > 0) {
+ struct gl_renderbuffer *rb;
+ rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
+ if (rb) {
+ /* check if deleting currently bound renderbuffer object */
+ if (rb == ctx->CurrentRenderbuffer) {
+ /* bind default */
+ ASSERT(rb->RefCount >= 2);
+ _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+ }
+
+ if (ctx->DrawBuffer->Name) {
+ detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
+ }
+ if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
+ detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
+ }
+
+ /* Remove from hash table immediately, to free the ID.
+ * But the object will not be freed until it's no longer
+ * referenced anywhere else.
+ */
+ _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
+
+ if (rb != &DummyRenderbuffer) {
+ /* no longer referenced by hash table */
+ _mesa_reference_renderbuffer(&rb, NULL);
+ }
+ }
+ }
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint first;
+ GLint i;
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (n < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
+ return;
+ }
+
+ if (!renderbuffers)
+ return;
+
+ first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
+
+ for (i = 0; i < n; i++) {
+ GLuint name = first + i;
+ renderbuffers[i] = name;
+ /* insert dummy placeholder into hash table */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+ }
+}
+
+
+/**
+ * Given an internal format token for a render buffer, return the
+ * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
+ * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
+ *
+ * This is similar to _mesa_base_tex_format() but the set of valid
+ * internal formats is different.
+ *
+ * Note that even if a format is determined to be legal here, validation
+ * of the FBO may fail if the format is not supported by the driver/GPU.
+ *
+ * \param internalFormat as passed to glRenderbufferStorage()
+ * \return the base internal format, or 0 if internalFormat is illegal
+ */
+GLenum
+_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
+{
+ /*
+ * Notes: some formats such as alpha, luminance, etc. were added
+ * with GL_ARB_framebuffer_object.
+ */
+ switch (internalFormat) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE4_ALPHA4:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+ case GL_RGB:
+ case GL_R3_G3_B2:
+ case GL_RGB4:
+ case GL_RGB5:
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ case GL_SRGB8_EXT:
+ return GL_RGB;
+ case GL_RGBA:
+ case GL_RGBA2:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ case GL_SRGB8_ALPHA8_EXT:
+ return GL_RGBA;
+ case GL_STENCIL_INDEX:
+ case GL_STENCIL_INDEX1_EXT:
+ case GL_STENCIL_INDEX4_EXT:
+ case GL_STENCIL_INDEX8_EXT:
+ case GL_STENCIL_INDEX16_EXT:
+ return GL_STENCIL_INDEX;
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT16:
+ case GL_DEPTH_COMPONENT24:
+ case GL_DEPTH_COMPONENT32:
+ return GL_DEPTH_COMPONENT;
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ if (ctx->Extensions.EXT_packed_depth_stencil)
+ return GL_DEPTH_STENCIL_EXT;
+ else
+ return 0;
+ case GL_RED:
+ case GL_R8:
+ case GL_R16:
+ return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
+ case GL_RG:
+ case GL_RG8:
+ case GL_RG16:
+ return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
+ /* signed normalized texture formats */
+ case GL_RED_SNORM:
+ case GL_R8_SNORM:
+ case GL_R16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
+ case GL_RG_SNORM:
+ case GL_RG8_SNORM:
+ case GL_RG16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
+ case GL_RGB_SNORM:
+ case GL_RGB8_SNORM:
+ case GL_RGB16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
+ case GL_RGBA_SNORM:
+ case GL_RGBA8_SNORM:
+ case GL_RGBA16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
+ case GL_ALPHA_SNORM:
+ case GL_ALPHA8_SNORM:
+ case GL_ALPHA16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+ case GL_LUMINANCE_SNORM:
+ case GL_LUMINANCE8_SNORM:
+ case GL_LUMINANCE16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+ case GL_LUMINANCE_ALPHA_SNORM:
+ case GL_LUMINANCE8_ALPHA8_SNORM:
+ case GL_LUMINANCE16_ALPHA16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+ case GL_INTENSITY_SNORM:
+ case GL_INTENSITY8_SNORM:
+ case GL_INTENSITY16_SNORM:
+ return ctx->Extensions.EXT_texture_snorm &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+ case GL_R16F:
+ case GL_R32F:
+ return ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.ARB_texture_float ? GL_RED : 0;
+ case GL_RG16F:
+ case GL_RG32F:
+ return ctx->Extensions.ARB_texture_rg &&
+ ctx->Extensions.ARB_texture_float ? GL_RG : 0;
+ case GL_RGB16F:
+ case GL_RGB32F:
+ return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
+ case GL_RGBA16F:
+ case GL_RGBA32F:
+ return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
+ case GL_ALPHA16F_ARB:
+ case GL_ALPHA32F_ARB:
+ return ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+ case GL_LUMINANCE16F_ARB:
+ case GL_LUMINANCE32F_ARB:
+ return ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+ case GL_LUMINANCE_ALPHA16F_ARB:
+ case GL_LUMINANCE_ALPHA32F_ARB:
+ return ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+ case GL_INTENSITY16F_ARB:
+ case GL_INTENSITY32F_ARB:
+ return ctx->Extensions.ARB_texture_float &&
+ ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+ /* XXX add integer formats eventually */
+ default:
+ return 0;
+ }
+}
+
+
+/**
+ * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
+ */
+static void
+invalidate_rb(GLuint key, void *data, void *userData)
+{
+ struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
+ struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
+
+ /* If this is a user-created FBO */
+ if (fb->Name) {
+ GLuint i;
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+ if (att->Type == GL_RENDERBUFFER &&
+ att->Renderbuffer == rb) {
+ /* Mark fb status as indeterminate to force re-validation */
+ fb->_Status = 0;
+ return;
+ }
+ }
+ }
+}
+
+
+/** sentinal value, see below */
+#define NO_SAMPLES 1000
+
+
+/**
+ * Helper function used by _mesa_RenderbufferStorageEXT() and
+ * _mesa_RenderbufferStorageMultisample().
+ * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
+ */
+static void
+renderbuffer_storage(GLenum target, GLenum internalFormat,
+ GLsizei width, GLsizei height, GLsizei samples)
+{
+ const char *func = samples == NO_SAMPLES ?
+ "glRenderbufferStorage" : "RenderbufferStorageMultisample";
+ struct gl_renderbuffer *rb;
+ GLenum baseFormat;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (target != GL_RENDERBUFFER_EXT) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
+ return;
+ }
+
+ baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+ if (baseFormat == 0) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
+ return;
+ }
+
+ if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
+ return;
+ }
+
+ if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
+ return;
+ }
+
+ if (samples == NO_SAMPLES) {
+ /* NumSamples == 0 indicates non-multisampling */
+ samples = 0;
+ }
+ else if (samples > (GLsizei) ctx->Const.MaxSamples) {
+ /* note: driver may choose to use more samples than what's requested */
+ _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
+ return;
+ }
+
+ rb = ctx->CurrentRenderbuffer;
+ if (!rb) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
+ return;
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ if (rb->InternalFormat == internalFormat &&
+ rb->Width == (GLuint) width &&
+ rb->Height == (GLuint) height) {
+ /* no change in allocation needed */
+ return;
+ }
+
+ /* These MUST get set by the AllocStorage func */
+ rb->Format = MESA_FORMAT_NONE;
+ rb->NumSamples = samples;
+
+ /* Now allocate the storage */
+ ASSERT(rb->AllocStorage);
+ if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
+ /* No error - check/set fields now */
+ assert(rb->Format != MESA_FORMAT_NONE);
+ assert(rb->Width == (GLuint) width);
+ assert(rb->Height == (GLuint) height);
+ rb->InternalFormat = internalFormat;
+ rb->_BaseFormat = baseFormat;
+ assert(rb->_BaseFormat != 0);
+ }
+ else {
+ /* Probably ran out of memory - clear the fields */
+ rb->Width = 0;
+ rb->Height = 0;
+ rb->Format = MESA_FORMAT_NONE;
+ rb->InternalFormat = GL_NONE;
+ rb->_BaseFormat = GL_NONE;
+ rb->NumSamples = 0;
+ }
+
+ /* Invalidate the framebuffers the renderbuffer is attached in. */
+ if (rb->AttachedAnytime) {
+ _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
+ }
+}
+
+
+#if FEATURE_OES_EGL_image
+void GLAPIENTRY
+_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
+{
+ struct gl_renderbuffer *rb;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (!ctx->Extensions.OES_EGL_image) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glEGLImageTargetRenderbufferStorageOES(unsupported)");
+ return;
+ }
+
+ if (target != GL_RENDERBUFFER) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "EGLImageTargetRenderbufferStorageOES");
+ return;
+ }
+
+ rb = ctx->CurrentRenderbuffer;
+ if (!rb) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "EGLImageTargetRenderbufferStorageOES");
+ return;
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
+}
+#endif
+
+
+/**
+ * Helper function for _mesa_GetRenderbufferParameterivEXT() and
+ * _mesa_GetFramebufferAttachmentParameterivEXT()
+ * We have to be careful to respect the base format. For example, if a
+ * renderbuffer/texture was created with internalFormat=GL_RGB but the
+ * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
+ * we need to return zero.
+ */
+static GLint
+get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
+{
+ switch (pname) {
+ case GL_RENDERBUFFER_RED_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+ if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
+ baseFormat == GL_RG || baseFormat == GL_RED)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+ if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+ if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+ if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
+ baseFormat == GL_LUMINANCE_ALPHA)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+ if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+ case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+ if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
+ return _mesa_get_format_bits(format, pname);
+ else
+ return 0;
+ default:
+ return 0;
+ }
+}
+
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+ GLsizei width, GLsizei height)
+{
+ /* GL_ARB_fbo says calling this function is equivalent to calling
+ * glRenderbufferStorageMultisample() with samples=0. We pass in
+ * a token value here just for error reporting purposes.
+ */
+ renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
+}
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
+ GLenum internalFormat,
+ GLsizei width, GLsizei height)
+{
+ renderbuffer_storage(target, internalFormat, width, height, samples);
+}
+
+
+/**
+ * OpenGL ES version of glRenderBufferStorage.
+ */
+void GLAPIENTRY
+_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+ GLsizei width, GLsizei height)
+{
+ switch (internalFormat) {
+ case GL_RGB565:
+ /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
+ /* choose a closest format */
+ internalFormat = GL_RGB5;
+ break;
+ default:
+ break;
+ }
+
+ renderbuffer_storage(target, internalFormat, width, height, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
+{
+ struct gl_renderbuffer *rb;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (target != GL_RENDERBUFFER_EXT) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetRenderbufferParameterivEXT(target)");
+ return;
+ }
+
+ rb = ctx->CurrentRenderbuffer;
+ if (!rb) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetRenderbufferParameterivEXT");
+ return;
+ }
+
+ /* No need to flush here since we're just quering state which is
+ * not effected by rendering.
+ */
+
+ switch (pname) {
+ case GL_RENDERBUFFER_WIDTH_EXT:
+ *params = rb->Width;
+ return;
+ case GL_RENDERBUFFER_HEIGHT_EXT:
+ *params = rb->Height;
+ return;
+ case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
+ *params = rb->InternalFormat;
+ return;
+ case GL_RENDERBUFFER_RED_SIZE_EXT:
+ case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+ case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+ case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+ case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+ case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+ *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
+ break;
+ case GL_RENDERBUFFER_SAMPLES:
+ if (ctx->Extensions.ARB_framebuffer_object) {
+ *params = rb->NumSamples;
+ break;
+ }
+ /* fallthrough */
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetRenderbufferParameterivEXT(target)");
+ return;
+ }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsFramebufferEXT(GLuint framebuffer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+ if (framebuffer) {
+ struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
+ if (rb != NULL && rb != &DummyFramebuffer)
+ return GL_TRUE;
+ }
+ return GL_FALSE;
+}
+
+
+/**
+ * Check if any of the attachments of the given framebuffer are textures
+ * (render to texture). Call ctx->Driver.RenderTexture() for such
+ * attachments.
+ */
+static void
+check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ GLuint i;
+ ASSERT(ctx->Driver.RenderTexture);
+
+ if (fb->Name == 0)
+ return; /* can't render to texture with winsys framebuffers */
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+ if (att->Texture && _mesa_get_attachment_teximage(att)) {
+ ctx->Driver.RenderTexture(ctx, fb, att);
+ }
+ }
+}
+
+
+/**
+ * Examine all the framebuffer's attachments to see if any are textures.
+ * If so, call ctx->Driver.FinishRenderTexture() for each texture to
+ * notify the device driver that the texture image may have changed.
+ */
+static void
+check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ if (fb->Name == 0)
+ return; /* can't render to texture with winsys framebuffers */
+
+ if (ctx->Driver.FinishRenderTexture) {
+ GLuint i;
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+ if (att->Texture && att->Renderbuffer) {
+ ctx->Driver.FinishRenderTexture(ctx, att);
+ }
+ }
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
+{
+ struct gl_framebuffer *newDrawFb, *newReadFb;
+ struct gl_framebuffer *oldDrawFb, *oldReadFb;
+ GLboolean bindReadBuf, bindDrawBuf;
+ GET_CURRENT_CONTEXT(ctx);
+
+#ifdef DEBUG
+ if (ctx->Extensions.ARB_framebuffer_object) {
+ ASSERT(ctx->Extensions.EXT_framebuffer_object);
+ ASSERT(ctx->Extensions.EXT_framebuffer_blit);
+ }
+#endif
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (!ctx->Extensions.EXT_framebuffer_object) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBindFramebufferEXT(unsupported)");
+ return;
+ }
+
+ switch (target) {
+#if FEATURE_EXT_framebuffer_blit
+ case GL_DRAW_FRAMEBUFFER_EXT:
+ if (!ctx->Extensions.EXT_framebuffer_blit) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+ return;
+ }
+ bindDrawBuf = GL_TRUE;
+ bindReadBuf = GL_FALSE;
+ break;
+ case GL_READ_FRAMEBUFFER_EXT:
+ if (!ctx->Extensions.EXT_framebuffer_blit) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+ return;
+ }
+ bindDrawBuf = GL_FALSE;
+ bindReadBuf = GL_TRUE;
+ break;
+#endif
+ case GL_FRAMEBUFFER_EXT:
+ bindDrawBuf = GL_TRUE;
+ bindReadBuf = GL_TRUE;
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+ return;
+ }
+
+ if (framebuffer) {
+ /* Binding a user-created framebuffer object */
+ newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
+ if (newDrawFb == &DummyFramebuffer) {
+ /* ID was reserved, but no real framebuffer object made yet */
+ newDrawFb = NULL;
+ }
+ else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
+ /* All FBO IDs must be Gen'd */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
+ return;
+ }
+
+ if (!newDrawFb) {
+ /* create new framebuffer object */
+ newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
+ if (!newDrawFb) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
+ return;
+ }
+ _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
+ }
+ newReadFb = newDrawFb;
+ }
+ else {
+ /* Binding the window system framebuffer (which was originally set
+ * with MakeCurrent).
+ */
+ newDrawFb = ctx->WinSysDrawBuffer;
+ newReadFb = ctx->WinSysReadBuffer;
+ }
+
+ ASSERT(newDrawFb);
+ ASSERT(newDrawFb != &DummyFramebuffer);
+
+ /* save pointers to current/old framebuffers */
+ oldDrawFb = ctx->DrawBuffer;
+ oldReadFb = ctx->ReadBuffer;
+
+ /* check if really changing bindings */
+ if (oldDrawFb == newDrawFb)
+ bindDrawBuf = GL_FALSE;
+ if (oldReadFb == newReadFb)
+ bindReadBuf = GL_FALSE;
+
+ /*
+ * OK, now bind the new Draw/Read framebuffers, if they're changing.
+ *
+ * We also check if we're beginning and/or ending render-to-texture.
+ * When a framebuffer with texture attachments is unbound, call
+ * ctx->Driver.FinishRenderTexture().
+ * When a framebuffer with texture attachments is bound, call
+ * ctx->Driver.RenderTexture().
+ *
+ * Note that if the ReadBuffer has texture attachments we don't consider
+ * that a render-to-texture case.
+ */
+ if (bindReadBuf) {
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ /* check if old readbuffer was render-to-texture */
+ check_end_texture_render(ctx, oldReadFb);
+
+ _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
+ }
+
+ if (bindDrawBuf) {
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ /* check if old read/draw buffers were render-to-texture */
+ if (!bindReadBuf)
+ check_end_texture_render(ctx, oldReadFb);
+
+ if (oldDrawFb != oldReadFb)
+ check_end_texture_render(ctx, oldDrawFb);
+
+ /* check if newly bound framebuffer has any texture attachments */
+ check_begin_texture_render(ctx, newDrawFb);
+
+ _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
+ }
+
+ if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
+ ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
+{
+ GLint i;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ for (i = 0; i < n; i++) {
+ if (framebuffers[i] > 0) {
+ struct gl_framebuffer *fb;
+ fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
+ if (fb) {
+ ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
+
+ /* check if deleting currently bound framebuffer object */
+ if (ctx->Extensions.EXT_framebuffer_blit) {
+ /* separate draw/read binding points */
+ if (fb == ctx->DrawBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+ }
+ if (fb == ctx->ReadBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
+ }
+ }
+ else {
+ /* only one binding point for read/draw buffers */
+ if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
+ /* bind default */
+ ASSERT(fb->RefCount >= 2);
+ _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+ }
+ }
+
+ /* remove from hash table immediately, to free the ID */
+ _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
+
+ if (fb != &DummyFramebuffer) {
+ /* But the object will not be freed until it's no longer
+ * bound in any context.
+ */
+ _mesa_reference_framebuffer(&fb, NULL);
+ }
+ }
+ }
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint first;
+ GLint i;
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (n < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
+ return;
+ }
+
+ if (!framebuffers)
+ return;
+
+ first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
+
+ for (i = 0; i < n; i++) {
+ GLuint name = first + i;
+ framebuffers[i] = name;
+ /* insert dummy placeholder into hash table */
+ _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+ _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
+ _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+ }
+}
+
+
+
+GLenum GLAPIENTRY
+_mesa_CheckFramebufferStatusEXT(GLenum target)
+{
+ struct gl_framebuffer *buffer;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+ buffer = get_framebuffer_target(ctx, target);
+ if (!buffer) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
+ return 0;
+ }
+
+ if (buffer->Name == 0) {
+ /* The window system / default framebuffer is always complete */
+ return GL_FRAMEBUFFER_COMPLETE_EXT;
+ }
+
+ /* No need to flush here */
+
+ if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
+ _mesa_test_framebuffer_completeness(ctx, buffer);
+ }
+
+ return buffer->_Status;
+}
+
+
+
+/**
+ * Common code called by glFramebufferTexture1D/2D/3DEXT().
+ */
+static void
+framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
+ GLenum attachment, GLenum textarget, GLuint texture,
+ GLint level, GLint zoffset)
+{
+ struct gl_renderbuffer_attachment *att;
+ struct gl_texture_object *texObj = NULL;
+ struct gl_framebuffer *fb;
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
+ return;
+ }
+
+ /* check framebuffer binding */
+ if (fb->Name == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTexture%sEXT", caller);
+ return;
+ }
+
+
+ /* The textarget, level, and zoffset parameters are only validated if
+ * texture is non-zero.
+ */
+ if (texture) {
+ GLboolean err = GL_TRUE;
+
+ texObj = _mesa_lookup_texture(ctx, texture);
+ if (texObj != NULL) {
+ if (textarget == 0) {
+ /* XXX what's the purpose of this? */
+ err = (texObj->Target != GL_TEXTURE_3D) &&
+ (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
+ (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
+ }
+ else {
+ err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
+ ? !IS_CUBE_FACE(textarget)
+ : (texObj->Target != textarget);
+ }
+ }
+ else {
+ /* can't render to a non-existant texture */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTexture%sEXT(non existant texture)",
+ caller);
+ return;
+ }
+
+ if (err) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTexture%sEXT(texture target mismatch)",
+ caller);
+ return;
+ }
+
+ if (texObj->Target == GL_TEXTURE_3D) {
+ const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
+ if (zoffset < 0 || zoffset >= maxSize) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glFramebufferTexture%sEXT(zoffset)", caller);
+ return;
+ }
+ }
+ else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
+ (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
+ if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glFramebufferTexture%sEXT(layer)", caller);
+ return;
+ }
+ }
+
+ if ((level < 0) ||
+ (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glFramebufferTexture%sEXT(level)", caller);
+ return;
+ }
+ }
+
+ att = _mesa_get_attachment(ctx, fb, attachment);
+ if (att == NULL) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferTexture%sEXT(attachment)", caller);
+ return;
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ _glthread_LOCK_MUTEX(fb->Mutex);
+ if (texObj) {
+ _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
+ level, zoffset);
+ /* Set the render-to-texture flag. We'll check this flag in
+ * glTexImage() and friends to determine if we need to revalidate
+ * any FBOs that might be rendering into this texture.
+ * This flag never gets cleared since it's non-trivial to determine
+ * when all FBOs might be done rendering to this texture. That's OK
+ * though since it's uncommon to render to a texture then repeatedly
+ * call glTexImage() to change images in the texture.
+ */
+ texObj->_RenderToTexture = GL_TRUE;
+ }
+ else {
+ _mesa_remove_attachment(ctx, att);
+ }
+
+ invalidate_framebuffer(fb);
+
+ _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
+ GLenum textarget, GLuint texture, GLint level)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferTexture1DEXT(textarget)");
+ return;
+ }
+
+ framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
+ level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
+ GLenum textarget, GLuint texture, GLint level)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if ((texture != 0) &&
+ (textarget != GL_TEXTURE_2D) &&
+ (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
+ (!IS_CUBE_FACE(textarget))) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
+ return;
+ }
+
+ framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
+ level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
+ GLenum textarget, GLuint texture,
+ GLint level, GLint zoffset)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferTexture3DEXT(textarget)");
+ return;
+ }
+
+ framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
+ level, zoffset);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
+ GLuint texture, GLint level, GLint layer)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
+ level, layer);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
+ GLenum renderbufferTarget,
+ GLuint renderbuffer)
+{
+ struct gl_renderbuffer_attachment *att;
+ struct gl_framebuffer *fb;
+ struct gl_renderbuffer *rb;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ fb = get_framebuffer_target(ctx, target);
+ if (!fb) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
+ return;
+ }
+
+ if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferRenderbufferEXT(renderbufferTarget)");
+ return;
+ }
+
+ if (fb->Name == 0) {
+ /* Can't attach new renderbuffers to a window system framebuffer */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
+ return;
+ }
+
+ att = _mesa_get_attachment(ctx, fb, attachment);
+ if (att == NULL) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glFramebufferRenderbufferEXT(invalid attachment %s)",
+ _mesa_lookup_enum_by_nr(attachment));
+ return;
+ }
+
+ if (renderbuffer) {
+ rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+ if (!rb) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferRenderbufferEXT(non-existant"
+ " renderbuffer %u)", renderbuffer);
+ return;
+ }
+ else if (rb == &DummyRenderbuffer) {
+ /* This is what NVIDIA does */
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glFramebufferRenderbufferEXT(renderbuffer %u)",
+ renderbuffer);
+ return;
+ }
+ }
+ else {
+ /* remove renderbuffer attachment */
+ rb = NULL;
+ }
+
+ if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
+ rb && rb->Format != MESA_FORMAT_NONE) {
+ /* make sure the renderbuffer is a depth/stencil format */
+ const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
+ if (baseFormat != GL_DEPTH_STENCIL) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferRenderbufferEXT(renderbuffer"
+ " is not DEPTH_STENCIL format)");
+ return;
+ }
+ }
+
+
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ assert(ctx->Driver.FramebufferRenderbuffer);
+ ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
+
+ /* Some subsequent GL commands may depend on the framebuffer's visual
+ * after the binding is updated. Update visual info now.
+ */
+ _mesa_update_framebuffer_visual(ctx, fb);
+}
+
+
+void GLAPIENTRY
+_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
+ GLenum pname, GLint *params)
+{
+ const struct gl_renderbuffer_attachment *att;
+ struct gl_framebuffer *buffer;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ buffer = get_framebuffer_target(ctx, target);
+ if (!buffer) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(target)");
+ return;
+ }
+
+ if (buffer->Name == 0) {
+ /* the default / window-system FBO */
+ att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
+ }
+ else {
+ /* user-created framebuffer FBO */
+ att = _mesa_get_attachment(ctx, buffer, attachment);
+ }
+
+ if (att == NULL) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(attachment)");
+ return;
+ }
+
+ if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+ /* the depth and stencil attachments must point to the same buffer */
+ const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
+ depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
+ stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
+ if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
+ " attachments differ)");
+ return;
+ }
+ }
+
+ /* No need to flush here */
+
+ switch (pname) {
+ case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
+ *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
+ if (att->Type == GL_RENDERBUFFER_EXT) {
+ *params = att->Renderbuffer->Name;
+ }
+ else if (att->Type == GL_TEXTURE) {
+ *params = att->Texture->Name;
+ }
+ else {
+ assert(att->Type == GL_NONE);
+ *params = 0;
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
+ if (att->Type == GL_TEXTURE) {
+ *params = att->TextureLevel;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
+ if (att->Type == GL_TEXTURE) {
+ if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
+ *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
+ }
+ else {
+ *params = 0;
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
+ if (att->Type == GL_TEXTURE) {
+ if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
+ *params = att->Zoffset;
+ }
+ else {
+ *params = 0;
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
+ if (!ctx->Extensions.ARB_framebuffer_object) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ }
+ else {
+ if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
+ *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
+ }
+ else {
+ /* According to ARB_framebuffer_sRGB, we should return LINEAR
+ * if the sRGB conversion is unsupported. */
+ *params = GL_LINEAR;
+ }
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
+ if (!ctx->Extensions.ARB_framebuffer_object) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ return;
+ }
+ else {
+ gl_format format = att->Renderbuffer->Format;
+ if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
+ /* special cases */
+ *params = GL_INDEX;
+ }
+ else {
+ *params = _mesa_get_format_datatype(format);
+ }
+ }
+ return;
+ case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+ case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+ case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+ case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+ case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+ case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+ if (!ctx->Extensions.ARB_framebuffer_object) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ }
+ else if (att->Texture) {
+ const struct gl_texture_image *texImage =
+ _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
+ att->TextureLevel);
+ if (texImage) {
+ *params = get_component_bits(pname, texImage->_BaseFormat,
+ texImage->TexFormat);
+ }
+ else {
+ *params = 0;
+ }
+ }
+ else if (att->Renderbuffer) {
+ *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
+ att->Renderbuffer->Format);
+ }
+ else {
+ *params = 0;
+ }
+ return;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetFramebufferAttachmentParameterivEXT(pname)");
+ return;
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GenerateMipmapEXT(GLenum target)
+{
+ struct gl_texture_object *texObj;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_CUBE_MAP:
+ /* OK, legal value */
+ break;
+ default:
+ /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
+ return;
+ }
+
+ texObj = _mesa_get_current_tex_object(ctx, target);
+
+ if (texObj->BaseLevel >= texObj->MaxLevel) {
+ /* nothing to do */
+ return;
+ }
+
+ if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
+ !_mesa_cube_complete(texObj)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGenerateMipmap(incomplete cube map)");
+ return;
+ }
+
+ _mesa_lock_texture(ctx, texObj);
+ if (target == GL_TEXTURE_CUBE_MAP) {
+ GLuint face;
+ for (face = 0; face < 6; face++)
+ ctx->Driver.GenerateMipmap(ctx,
+ GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
+ texObj);
+ }
+ else {
+ ctx->Driver.GenerateMipmap(ctx, target, texObj);
+ }
+ _mesa_unlock_texture(ctx, texObj);
+}
+
+
+#if FEATURE_EXT_framebuffer_blit
+
+static const struct gl_renderbuffer_attachment *
+find_attachment(const struct gl_framebuffer *fb,
+ const struct gl_renderbuffer *rb)
+{
+ GLuint i;
+ for (i = 0; i < Elements(fb->Attachment); i++) {
+ if (fb->Attachment[i].Renderbuffer == rb)
+ return &fb->Attachment[i];
+ }
+ return NULL;
+}
+
+
+
+/**
+ * Blit rectangular region, optionally from one framebuffer to another.
+ *
+ * Note, if the src buffer is multisampled and the dest is not, this is
+ * when the samples must be resolved to a single color.
+ */
+void GLAPIENTRY
+_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter)
+{
+ const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
+ GL_DEPTH_BUFFER_BIT |
+ GL_STENCIL_BUFFER_BIT);
+ const struct gl_framebuffer *readFb, *drawFb;
+ const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
+ GET_CURRENT_CONTEXT(ctx);
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+ FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx,
+ "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, _mesa_lookup_enum_by_nr(filter));
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ readFb = ctx->ReadBuffer;
+ drawFb = ctx->DrawBuffer;
+
+ if (!readFb || !drawFb) {
+ /* This will normally never happen but someday we may want to
+ * support MakeCurrent() with no drawables.
+ */
+ return;
+ }
+
+ /* check for complete framebuffers */
+ if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
+ readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glBlitFramebufferEXT(incomplete draw/read buffers)");
+ return;
+ }
+
+ if (filter != GL_NEAREST && filter != GL_LINEAR) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
+ return;
+ }
+
+ if (mask & ~legalMaskBits) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
+ return;
+ }
+
+ /* depth/stencil must be blitted with nearest filtering */
+ if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
+ && filter != GL_NEAREST) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
+ return;
+ }
+
+ /* get color read/draw renderbuffers */
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ colorReadRb = readFb->_ColorReadBuffer;
+ colorDrawRb = drawFb->_ColorDrawBuffers[0];
+ }
+ else {
+ colorReadRb = colorDrawRb = NULL;
+ }
+
+ if (mask & GL_STENCIL_BUFFER_BIT) {
+ struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
+ struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
+ if (!readRb ||
+ !drawRb ||
+ _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
+ _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(stencil buffer size mismatch)");
+ return;
+ }
+ }
+
+ if (mask & GL_DEPTH_BUFFER_BIT) {
+ struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
+ struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
+ if (!readRb ||
+ !drawRb ||
+ _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
+ _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(depth buffer size mismatch)");
+ return;
+ }
+ }
+
+ if (readFb->Visual.samples > 0 &&
+ drawFb->Visual.samples > 0 &&
+ readFb->Visual.samples != drawFb->Visual.samples) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(mismatched samples");
+ return;
+ }
+
+ /* extra checks for multisample copies... */
+ if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
+ /* src and dest region sizes must be the same */
+ if (srcX1 - srcX0 != dstX1 - dstX0 ||
+ srcY1 - srcY0 != dstY1 - dstY0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
+ return;
+ }
+
+ /* color formats must match */
+ if (colorReadRb &&
+ colorDrawRb &&
+ colorReadRb->Format != colorDrawRb->Format) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
+ return;
+ }
+ }
+
+ if (!ctx->Extensions.EXT_framebuffer_blit) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
+ return;
+ }
+
+ /* Debug code */
+ if (DEBUG_BLIT) {
+ printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
+ " 0x%x, 0x%x)\n",
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, filter);
+ if (colorReadRb) {
+ const struct gl_renderbuffer_attachment *att;
+
+ att = find_attachment(readFb, colorReadRb);
+ printf(" Src FBO %u RB %u (%dx%d) ",
+ readFb->Name, colorReadRb->Name,
+ colorReadRb->Width, colorReadRb->Height);
+ if (att && att->Texture) {
+ printf("Tex %u tgt 0x%x level %u face %u",
+ att->Texture->Name,
+ att->Texture->Target,
+ att->TextureLevel,
+ att->CubeMapFace);
+ }
+ printf("\n");
+
+ att = find_attachment(drawFb, colorDrawRb);
+ printf(" Dst FBO %u RB %u (%dx%d) ",
+ drawFb->Name, colorDrawRb->Name,
+ colorDrawRb->Width, colorDrawRb->Height);
+ if (att && att->Texture) {
+ printf("Tex %u tgt 0x%x level %u face %u",
+ att->Texture->Name,
+ att->Texture->Target,
+ att->TextureLevel,
+ att->CubeMapFace);
+ }
+ printf("\n");
+ }
+ }
+
+ ASSERT(ctx->Driver.BlitFramebuffer);
+ ctx->Driver.BlitFramebuffer(ctx,
+ srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ mask, filter);
+}
+#endif /* FEATURE_EXT_framebuffer_blit */
+
+#if FEATURE_ARB_geometry_shader4
+void GLAPIENTRY
+_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
+ GLuint texture, GLint level)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTextureARB "
+ "not implemented!");
+}
+
+void GLAPIENTRY
+_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
+ GLuint texture, GLint level, GLenum face)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glFramebufferTextureFaceARB "
+ "not implemented!");
+}
+#endif /* FEATURE_ARB_geometry_shader4 */
diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c
index e62170b71..4c31ccb76 100644
--- a/mesalib/src/mesa/main/formats.c
+++ b/mesalib/src/mesa/main/formats.c
@@ -677,7 +677,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
{
MESA_FORMAT_LUMINANCE_FLOAT32,
"MESA_FORMAT_LUMINANCE_FLOAT32",
- GL_ALPHA,
+ GL_LUMINANCE,
GL_FLOAT,
0, 0, 0, 0,
32, 0, 0, 0, 0,
@@ -686,7 +686,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
{
MESA_FORMAT_LUMINANCE_FLOAT16,
"MESA_FORMAT_LUMINANCE_FLOAT16",
- GL_ALPHA,
+ GL_LUMINANCE,
GL_FLOAT,
0, 0, 0, 0,
16, 0, 0, 0, 0,
@@ -728,6 +728,42 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
0, 16, 0, 0, 0,
1, 1, 2
},
+ {
+ MESA_FORMAT_R_FLOAT32,
+ "MESA_FORMAT_R_FLOAT32",
+ GL_RED,
+ GL_FLOAT,
+ 32, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_R_FLOAT16,
+ "MESA_FORMAT_R_FLOAT16",
+ GL_RED,
+ GL_FLOAT,
+ 16, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RG_FLOAT32,
+ "MESA_FORMAT_RG_FLOAT32",
+ GL_RG,
+ GL_FLOAT,
+ 32, 32, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RG_FLOAT16,
+ "MESA_FORMAT_RG_FLOAT16",
+ GL_RG,
+ GL_FLOAT,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
/* unnormalized signed int formats */
{
@@ -1714,22 +1750,26 @@ _mesa_format_to_type_and_comps(gl_format format,
*comps = 3;
return;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+ case MESA_FORMAT_RG_FLOAT32:
*datatype = GL_FLOAT;
*comps = 2;
return;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+ case MESA_FORMAT_RG_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 2;
return;
case MESA_FORMAT_ALPHA_FLOAT32:
case MESA_FORMAT_LUMINANCE_FLOAT32:
case MESA_FORMAT_INTENSITY_FLOAT32:
+ case MESA_FORMAT_R_FLOAT32:
*datatype = GL_FLOAT;
*comps = 1;
return;
case MESA_FORMAT_ALPHA_FLOAT16:
case MESA_FORMAT_LUMINANCE_FLOAT16:
case MESA_FORMAT_INTENSITY_FLOAT16:
+ case MESA_FORMAT_R_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 1;
return;
diff --git a/mesalib/src/mesa/main/formats.h b/mesalib/src/mesa/main/formats.h
index e0c2acbb9..15ac62cfe 100644
--- a/mesalib/src/mesa/main/formats.h
+++ b/mesalib/src/mesa/main/formats.h
@@ -142,6 +142,10 @@ typedef enum
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
MESA_FORMAT_INTENSITY_FLOAT32,
MESA_FORMAT_INTENSITY_FLOAT16,
+ MESA_FORMAT_R_FLOAT32,
+ MESA_FORMAT_R_FLOAT16,
+ MESA_FORMAT_RG_FLOAT32,
+ MESA_FORMAT_RG_FLOAT16,
/*@}*/
/**
diff --git a/mesalib/src/mesa/main/framebuffer.c b/mesalib/src/mesa/main/framebuffer.c
index b741c51ab..66c9bd910 100644
--- a/mesalib/src/mesa/main/framebuffer.c
+++ b/mesalib/src/mesa/main/framebuffer.c
@@ -1,1085 +1,1097 @@
-/*
- * Mesa 3-D graphics library
- * Version: 7.2
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * Functions for allocating/managing framebuffers and renderbuffers.
- * Also, routines for reading/writing renderbuffer data as ubytes,
- * ushorts, uints, etc.
- */
-
-
-#include "glheader.h"
-#include "imports.h"
-#include "buffers.h"
-#include "context.h"
-#include "depthstencil.h"
-#include "enums.h"
-#include "formats.h"
-#include "macros.h"
-#include "mtypes.h"
-#include "fbobject.h"
-#include "framebuffer.h"
-#include "renderbuffer.h"
-#include "texobj.h"
-
-
-
-/**
- * Compute/set the _DepthMax field for the given framebuffer.
- * This value depends on the Z buffer resolution.
- */
-static void
-compute_depth_max(struct gl_framebuffer *fb)
-{
- if (fb->Visual.depthBits == 0) {
- /* Special case. Even if we don't have a depth buffer we need
- * good values for DepthMax for Z vertex transformation purposes
- * and for per-fragment fog computation.
- */
- fb->_DepthMax = (1 << 16) - 1;
- }
- else if (fb->Visual.depthBits < 32) {
- fb->_DepthMax = (1 << fb->Visual.depthBits) - 1;
- }
- else {
- /* Special case since shift values greater than or equal to the
- * number of bits in the left hand expression's type are undefined.
- */
- fb->_DepthMax = 0xffffffff;
- }
- fb->_DepthMaxF = (GLfloat) fb->_DepthMax;
-
- /* Minimum resolvable depth value, for polygon offset */
- fb->_MRD = (GLfloat)1.0 / fb->_DepthMaxF;
-}
-
-/**
- * Create and initialize a gl_framebuffer object.
- * This is intended for creating _window_system_ framebuffers, not generic
- * framebuffer objects ala GL_EXT_framebuffer_object.
- *
- * \sa _mesa_new_framebuffer
- */
-struct gl_framebuffer *
-_mesa_create_framebuffer(const struct gl_config *visual)
-{
- struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
- assert(visual);
- if (fb) {
- _mesa_initialize_window_framebuffer(fb, visual);
- }
- return fb;
-}
-
-
-/**
- * Allocate a new gl_framebuffer object.
- * This is the default function for ctx->Driver.NewFramebuffer().
- * This is for allocating user-created framebuffers, not window-system
- * framebuffers!
- * \sa _mesa_create_framebuffer
- */
-struct gl_framebuffer *
-_mesa_new_framebuffer(struct gl_context *ctx, GLuint name)
-{
- struct gl_framebuffer *fb;
- (void) ctx;
- assert(name != 0);
- fb = CALLOC_STRUCT(gl_framebuffer);
- if (fb) {
- _mesa_initialize_user_framebuffer(fb, name);
- }
- return fb;
-}
-
-
-/**
- * Initialize a gl_framebuffer object. Typically used to initialize
- * window system-created framebuffers, not user-created framebuffers.
- * \sa _mesa_initialize_user_framebuffer
- */
-void
-_mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,
- const struct gl_config *visual)
-{
- assert(fb);
- assert(visual);
-
- memset(fb, 0, sizeof(struct gl_framebuffer));
-
- _glthread_INIT_MUTEX(fb->Mutex);
-
- fb->RefCount = 1;
-
- /* save the visual */
- fb->Visual = *visual;
-
- /* Init read/draw renderbuffer state */
- if (visual->doubleBufferMode) {
- fb->_NumColorDrawBuffers = 1;
- fb->ColorDrawBuffer[0] = GL_BACK;
- fb->_ColorDrawBufferIndexes[0] = BUFFER_BACK_LEFT;
- fb->ColorReadBuffer = GL_BACK;
- fb->_ColorReadBufferIndex = BUFFER_BACK_LEFT;
- }
- else {
- fb->_NumColorDrawBuffers = 1;
- fb->ColorDrawBuffer[0] = GL_FRONT;
- fb->_ColorDrawBufferIndexes[0] = BUFFER_FRONT_LEFT;
- fb->ColorReadBuffer = GL_FRONT;
- fb->_ColorReadBufferIndex = BUFFER_FRONT_LEFT;
- }
-
- fb->Delete = _mesa_destroy_framebuffer;
- fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
-
- compute_depth_max(fb);
-}
-
-
-/**
- * Initialize a user-created gl_framebuffer object.
- * \sa _mesa_initialize_window_framebuffer
- */
-void
-_mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name)
-{
- assert(fb);
- assert(name);
-
- memset(fb, 0, sizeof(struct gl_framebuffer));
-
- fb->Name = name;
- fb->RefCount = 1;
- fb->_NumColorDrawBuffers = 1;
- fb->ColorDrawBuffer[0] = GL_COLOR_ATTACHMENT0_EXT;
- fb->_ColorDrawBufferIndexes[0] = BUFFER_COLOR0;
- fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
- fb->_ColorReadBufferIndex = BUFFER_COLOR0;
- fb->Delete = _mesa_destroy_framebuffer;
- _glthread_INIT_MUTEX(fb->Mutex);
-}
-
-
-/**
- * Deallocate buffer and everything attached to it.
- * Typically called via the gl_framebuffer->Delete() method.
- */
-void
-_mesa_destroy_framebuffer(struct gl_framebuffer *fb)
-{
- if (fb) {
- _mesa_free_framebuffer_data(fb);
- free(fb);
- }
-}
-
-
-/**
- * Free all the data hanging off the given gl_framebuffer, but don't free
- * the gl_framebuffer object itself.
- */
-void
-_mesa_free_framebuffer_data(struct gl_framebuffer *fb)
-{
- GLuint i;
-
- assert(fb);
- assert(fb->RefCount == 0);
-
- _glthread_DESTROY_MUTEX(fb->Mutex);
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- if (att->Renderbuffer) {
- _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
- }
- if (att->Texture) {
- _mesa_reference_texobj(&att->Texture, NULL);
- }
- ASSERT(!att->Renderbuffer);
- ASSERT(!att->Texture);
- att->Type = GL_NONE;
- }
-
- /* unbind _Depth/_StencilBuffer to decr ref counts */
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, NULL);
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, NULL);
-}
-
-
-/**
- * Set *ptr to point to fb, with refcounting and locking.
- */
-void
-_mesa_reference_framebuffer(struct gl_framebuffer **ptr,
- struct gl_framebuffer *fb)
-{
- assert(ptr);
- if (*ptr == fb) {
- /* no change */
- return;
- }
-
- if (*ptr) {
- /* unreference old renderbuffer */
- GLboolean deleteFlag = GL_FALSE;
- struct gl_framebuffer *oldFb = *ptr;
-
- _glthread_LOCK_MUTEX(oldFb->Mutex);
- ASSERT(oldFb->RefCount > 0);
- oldFb->RefCount--;
- deleteFlag = (oldFb->RefCount == 0);
- _glthread_UNLOCK_MUTEX(oldFb->Mutex);
-
- if (deleteFlag)
- oldFb->Delete(oldFb);
-
- *ptr = NULL;
- }
- assert(!*ptr);
-
- if (fb) {
- _glthread_LOCK_MUTEX(fb->Mutex);
- fb->RefCount++;
- _glthread_UNLOCK_MUTEX(fb->Mutex);
- *ptr = fb;
- }
-}
-
-
-/**
- * Resize the given framebuffer's renderbuffers to the new width and height.
- * This should only be used for window-system framebuffers, not
- * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).
- * This will typically be called via ctx->Driver.ResizeBuffers() or directly
- * from a device driver.
- *
- * \note it's possible for ctx to be null since a window can be resized
- * without a currently bound rendering context.
- */
-void
-_mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
- GLuint width, GLuint height)
-{
- GLuint i;
-
- /* XXX I think we could check if the size is not changing
- * and return early.
- */
-
- /* For window system framebuffers, Name is zero */
- assert(fb->Name == 0);
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- if (att->Type == GL_RENDERBUFFER_EXT && att->Renderbuffer) {
- struct gl_renderbuffer *rb = att->Renderbuffer;
- /* only resize if size is changing */
- if (rb->Width != width || rb->Height != height) {
- if (rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- ASSERT(rb->Width == width);
- ASSERT(rb->Height == height);
- }
- else {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
- /* no return */
- }
- }
- }
- }
-
- if (fb->_DepthBuffer) {
- struct gl_renderbuffer *rb = fb->_DepthBuffer;
- if (rb->Width != width || rb->Height != height) {
- if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
- }
- }
- }
-
- if (fb->_StencilBuffer) {
- struct gl_renderbuffer *rb = fb->_StencilBuffer;
- if (rb->Width != width || rb->Height != height) {
- if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
- }
- }
- }
-
- fb->Width = width;
- fb->Height = height;
-
- if (ctx) {
- /* update scissor / window bounds */
- _mesa_update_draw_buffer_bounds(ctx);
- /* Signal new buffer state so that swrast will update its clipping
- * info (the CLIP_BIT flag).
- */
- ctx->NewState |= _NEW_BUFFERS;
- }
-}
-
-
-
-/**
- * XXX THIS IS OBSOLETE - drivers should take care of detecting window
- * size changes and act accordingly, likely calling _mesa_resize_framebuffer().
- *
- * GL_MESA_resize_buffers extension.
- *
- * When this function is called, we'll ask the window system how large
- * the current window is. If it's a new size, we'll call the driver's
- * ResizeBuffers function. The driver will then resize its color buffers
- * as needed, and maybe call the swrast's routine for reallocating
- * swrast-managed depth/stencil/accum/etc buffers.
- * \note This function should only be called through the GL API, not
- * from device drivers (as was done in the past).
- */
-void
-_mesa_resizebuffers( struct gl_context *ctx )
-{
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
-
- if (MESA_VERBOSE & VERBOSE_API)
- _mesa_debug(ctx, "glResizeBuffersMESA\n");
-
- if (!ctx->Driver.GetBufferSize) {
- return;
- }
-
- if (ctx->WinSysDrawBuffer) {
- GLuint newWidth, newHeight;
- struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;
-
- assert(buffer->Name == 0);
-
- /* ask device driver for size of output buffer */
- ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
-
- /* see if size of device driver's color buffer (window) has changed */
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- if (ctx->Driver.ResizeBuffers)
- ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
- }
- }
-
- if (ctx->WinSysReadBuffer
- && ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
- GLuint newWidth, newHeight;
- struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;
-
- assert(buffer->Name == 0);
-
- /* ask device driver for size of read buffer */
- ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
-
- /* see if size of device driver's color buffer (window) has changed */
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- if (ctx->Driver.ResizeBuffers)
- ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
- }
- }
-
- ctx->NewState |= _NEW_BUFFERS; /* to update scissor / window bounds */
-}
-
-
-/*
- * XXX THIS IS OBSOLETE
- */
-void GLAPIENTRY
-_mesa_ResizeBuffersMESA( void )
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (ctx->Extensions.MESA_resize_buffers)
- _mesa_resizebuffers( ctx );
-}
-
-
-
-/**
- * Examine all the framebuffer's renderbuffers to update the Width/Height
- * fields of the framebuffer. If we have renderbuffers with different
- * sizes, set the framebuffer's width and height to the min size.
- * Note: this is only intended for user-created framebuffers, not
- * window-system framebuffes.
- */
-static void
-update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- GLuint minWidth = ~0, minHeight = ~0;
- GLuint i;
-
- /* user-created framebuffers only */
- assert(fb->Name);
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- const struct gl_renderbuffer *rb = att->Renderbuffer;
- if (rb) {
- minWidth = MIN2(minWidth, rb->Width);
- minHeight = MIN2(minHeight, rb->Height);
- }
- }
-
- if (minWidth != ~0) {
- fb->Width = minWidth;
- fb->Height = minHeight;
- }
- else {
- fb->Width = 0;
- fb->Height = 0;
- }
-}
-
-
-/**
- * Update the context's current drawing buffer's Xmin, Xmax, Ymin, Ymax fields.
- * These values are computed from the buffer's width and height and
- * the scissor box, if it's enabled.
- * \param ctx the GL context.
- */
-void
-_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
-{
- struct gl_framebuffer *buffer = ctx->DrawBuffer;
-
- if (!buffer)
- return;
-
- if (buffer->Name) {
- /* user-created framebuffer size depends on the renderbuffers */
- update_framebuffer_size(ctx, buffer);
- }
-
- buffer->_Xmin = 0;
- buffer->_Ymin = 0;
- buffer->_Xmax = buffer->Width;
- buffer->_Ymax = buffer->Height;
-
- if (ctx->Scissor.Enabled) {
- if (ctx->Scissor.X > buffer->_Xmin) {
- buffer->_Xmin = ctx->Scissor.X;
- }
- if (ctx->Scissor.Y > buffer->_Ymin) {
- buffer->_Ymin = ctx->Scissor.Y;
- }
- if (ctx->Scissor.X + ctx->Scissor.Width < buffer->_Xmax) {
- buffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
- }
- if (ctx->Scissor.Y + ctx->Scissor.Height < buffer->_Ymax) {
- buffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
- }
- /* finally, check for empty region */
- if (buffer->_Xmin > buffer->_Xmax) {
- buffer->_Xmin = buffer->_Xmax;
- }
- if (buffer->_Ymin > buffer->_Ymax) {
- buffer->_Ymin = buffer->_Ymax;
- }
- }
-
- ASSERT(buffer->_Xmin <= buffer->_Xmax);
- ASSERT(buffer->_Ymin <= buffer->_Ymax);
-}
-
-
-/**
- * The glGet queries of the framebuffer red/green/blue size, stencil size,
- * etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
- * change depending on the renderbuffer bindings. This function updates
- * the given framebuffer's Visual from the current renderbuffer bindings.
- *
- * This may apply to user-created framebuffers or window system framebuffers.
- *
- * Also note: ctx->DrawBuffer->Visual.depthBits might not equal
- * ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
- * The former one is used to convert floating point depth values into
- * integer Z values.
- */
-void
-_mesa_update_framebuffer_visual(struct gl_context *ctx,
- struct gl_framebuffer *fb)
-{
- GLuint i;
-
- memset(&fb->Visual, 0, sizeof(fb->Visual));
- fb->Visual.rgbMode = GL_TRUE; /* assume this */
-
-#if 0 /* this _might_ be needed */
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- /* leave visual fields zero'd */
- return;
- }
-#endif
-
- /* find first RGB renderbuffer */
- for (i = 0; i < BUFFER_COUNT; i++) {
- if (fb->Attachment[i].Renderbuffer) {
- const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
- const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
- const gl_format fmt = rb->Format;
-
- if (_mesa_is_legal_color_format(ctx, baseFormat)) {
- fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
- fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
- fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
- fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
- fb->Visual.rgbBits = fb->Visual.redBits
- + fb->Visual.greenBits + fb->Visual.blueBits;
- fb->Visual.floatMode = GL_FALSE;
- fb->Visual.samples = rb->NumSamples;
- if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
- fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
- break;
- }
- }
- }
-
- if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
- const struct gl_renderbuffer *rb =
- fb->Attachment[BUFFER_DEPTH].Renderbuffer;
- const gl_format fmt = rb->Format;
- fb->Visual.haveDepthBuffer = GL_TRUE;
- fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
- }
-
- if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
- const struct gl_renderbuffer *rb =
- fb->Attachment[BUFFER_STENCIL].Renderbuffer;
- const gl_format fmt = rb->Format;
- fb->Visual.haveStencilBuffer = GL_TRUE;
- fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
- }
-
- if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
- const struct gl_renderbuffer *rb =
- fb->Attachment[BUFFER_ACCUM].Renderbuffer;
- const gl_format fmt = rb->Format;
- fb->Visual.haveAccumBuffer = GL_TRUE;
- fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
- fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
- fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
- fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
- }
-
- compute_depth_max(fb);
-}
-
-
-/**
- * Update the framebuffer's _DepthBuffer field using the renderbuffer
- * found at the given attachment index.
- *
- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
- * create and install a depth wrapper/adaptor.
- *
- * \param fb the framebuffer whose _DepthBuffer field to update
- * \param attIndex indicates the renderbuffer to possibly wrap
- */
-void
-_mesa_update_depth_buffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLuint attIndex)
-{
- struct gl_renderbuffer *depthRb;
-
- /* only one possiblity for now */
- ASSERT(attIndex == BUFFER_DEPTH);
-
- depthRb = fb->Attachment[attIndex].Renderbuffer;
-
- if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {
- /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */
- if (!fb->_DepthBuffer
- || fb->_DepthBuffer->Wrapped != depthRb
- || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
- /* need to update wrapper */
- struct gl_renderbuffer *wrapper
- = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
- ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
- }
- }
- else {
- /* depthRb may be null */
- _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);
- }
-}
-
-
-/**
- * Update the framebuffer's _StencilBuffer field using the renderbuffer
- * found at the given attachment index.
- *
- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
- * create and install a stencil wrapper/adaptor.
- *
- * \param fb the framebuffer whose _StencilBuffer field to update
- * \param attIndex indicates the renderbuffer to possibly wrap
- */
-void
-_mesa_update_stencil_buffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLuint attIndex)
-{
- struct gl_renderbuffer *stencilRb;
-
- ASSERT(attIndex == BUFFER_DEPTH ||
- attIndex == BUFFER_STENCIL);
-
- stencilRb = fb->Attachment[attIndex].Renderbuffer;
-
- if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {
- /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */
- if (!fb->_StencilBuffer
- || fb->_StencilBuffer->Wrapped != stencilRb
- || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {
- /* need to update wrapper */
- struct gl_renderbuffer *wrapper
- = _mesa_new_s8_renderbuffer_wrapper(ctx, stencilRb);
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);
- ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);
- }
- }
- else {
- /* stencilRb may be null */
- _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);
- }
-}
-
-
-/*
- * Example DrawBuffers scenarios:
- *
- * 1. glDrawBuffer(GL_FRONT_AND_BACK), fixed-func or shader writes to
- * "gl_FragColor" or program writes to the "result.color" register:
- *
- * fragment color output renderbuffer
- * --------------------- ---------------
- * color[0] Front, Back
- *
- *
- * 2. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]), shader writes to
- * gl_FragData[i] or program writes to result.color[i] registers:
- *
- * fragment color output renderbuffer
- * --------------------- ---------------
- * color[0] Front
- * color[1] Aux0
- * color[3] Aux1
- *
- *
- * 3. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]) and shader writes to
- * gl_FragColor, or fixed function:
- *
- * fragment color output renderbuffer
- * --------------------- ---------------
- * color[0] Front, Aux0, Aux1
- *
- *
- * In either case, the list of renderbuffers is stored in the
- * framebuffer->_ColorDrawBuffers[] array and
- * framebuffer->_NumColorDrawBuffers indicates the number of buffers.
- * The renderer (like swrast) has to look at the current fragment shader
- * to see if it writes to gl_FragColor vs. gl_FragData[i] to determine
- * how to map color outputs to renderbuffers.
- *
- * Note that these two calls are equivalent (for fixed function fragment
- * shading anyway):
- * a) glDrawBuffer(GL_FRONT_AND_BACK); (assuming non-stereo framebuffer)
- * b) glDrawBuffers(2, [GL_FRONT_LEFT, GL_BACK_LEFT]);
- */
-
-
-
-
-/**
- * Update the (derived) list of color drawing renderbuffer pointers.
- * Later, when we're rendering we'll loop from 0 to _NumColorDrawBuffers
- * writing colors.
- */
-static void
-update_color_draw_buffers(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- GLuint output;
-
- /* set 0th buffer to NULL now in case _NumColorDrawBuffers is zero */
- fb->_ColorDrawBuffers[0] = NULL;
-
- for (output = 0; output < fb->_NumColorDrawBuffers; output++) {
- GLint buf = fb->_ColorDrawBufferIndexes[output];
- if (buf >= 0) {
- fb->_ColorDrawBuffers[output] = fb->Attachment[buf].Renderbuffer;
- }
- else {
- fb->_ColorDrawBuffers[output] = NULL;
- }
- }
-}
-
-
-/**
- * Update the (derived) color read renderbuffer pointer.
- * Unlike the DrawBuffer, we can only read from one (or zero) color buffers.
- */
-static void
-update_color_read_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- (void) ctx;
- if (fb->_ColorReadBufferIndex == -1 ||
- fb->DeletePending ||
- fb->Width == 0 ||
- fb->Height == 0) {
- fb->_ColorReadBuffer = NULL; /* legal! */
- }
- else {
- ASSERT(fb->_ColorReadBufferIndex >= 0);
- ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);
- fb->_ColorReadBuffer
- = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
- }
-}
-
-
-/**
- * Update a gl_framebuffer's derived state.
- *
- * Specifically, update these framebuffer fields:
- * _ColorDrawBuffers
- * _NumColorDrawBuffers
- * _ColorReadBuffer
- * _DepthBuffer
- * _StencilBuffer
- *
- * If the framebuffer is user-created, make sure it's complete.
- *
- * The following functions (at least) can effect framebuffer state:
- * glReadBuffer, glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT,
- * glRenderbufferStorageEXT.
- */
-static void
-update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- if (fb->Name == 0) {
- /* This is a window-system framebuffer */
- /* Need to update the FB's GL_DRAW_BUFFER state to match the
- * context state (GL_READ_BUFFER too).
- */
- if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {
- _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
- ctx->Color.DrawBuffer, NULL);
- }
- }
- else {
- /* This is a user-created framebuffer.
- * Completeness only matters for user-created framebuffers.
- */
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {
- _mesa_test_framebuffer_completeness(ctx, fb);
- }
- }
-
- /* Strictly speaking, we don't need to update the draw-state
- * if this FB is bound as ctx->ReadBuffer (and conversely, the
- * read-state if this FB is bound as ctx->DrawBuffer), but no
- * harm.
- */
- update_color_draw_buffers(ctx, fb);
- update_color_read_buffer(ctx, fb);
- _mesa_update_depth_buffer(ctx, fb, BUFFER_DEPTH);
- _mesa_update_stencil_buffer(ctx, fb, BUFFER_STENCIL);
-
- compute_depth_max(fb);
-}
-
-
-/**
- * Update state related to the current draw/read framebuffers.
- */
-void
-_mesa_update_framebuffer(struct gl_context *ctx)
-{
- struct gl_framebuffer *drawFb;
- struct gl_framebuffer *readFb;
-
- assert(ctx);
- drawFb = ctx->DrawBuffer;
- readFb = ctx->ReadBuffer;
-
- update_framebuffer(ctx, drawFb);
- if (readFb != drawFb)
- update_framebuffer(ctx, readFb);
-}
-
-
-/**
- * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
- * glCopyTex[Sub]Image, etc) exists.
- * \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
- * GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
- * \return GL_TRUE if buffer exists, GL_FALSE otherwise
- */
-GLboolean
-_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
-{
- const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
-
- /* If we don't know the framebuffer status, update it now */
- if (ctx->ReadBuffer->_Status == 0) {
- _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
- }
-
- if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- return GL_FALSE;
- }
-
- switch (format) {
- case GL_COLOR:
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- case GL_RG:
- case GL_RGB:
- case GL_BGR:
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- case GL_COLOR_INDEX:
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RGB_INTEGER_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
- return GL_FALSE;
- }
- ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
- _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
- break;
- case GL_DEPTH:
- case GL_DEPTH_COMPONENT:
- if (!att[BUFFER_DEPTH].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
- break;
- case GL_STENCIL:
- case GL_STENCIL_INDEX:
- if (!att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
- break;
- case GL_DEPTH_STENCIL_EXT:
- if (!att[BUFFER_DEPTH].Renderbuffer ||
- !att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*
- ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
- ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
- */
- break;
- default:
- _mesa_problem(ctx,
- "Unexpected format 0x%x in _mesa_source_buffer_exists",
- format);
- return GL_FALSE;
- }
-
- /* OK */
- return GL_TRUE;
-}
-
-
-/**
- * As above, but for drawing operations.
- * XXX could do some code merging w/ above function.
- */
-GLboolean
-_mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)
-{
- const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
-
- /* If we don't know the framebuffer status, update it now */
- if (ctx->DrawBuffer->_Status == 0) {
- _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer);
- }
-
- if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- return GL_FALSE;
- }
-
- switch (format) {
- case GL_COLOR:
- case GL_RED:
- case GL_GREEN:
- case GL_BLUE:
- case GL_ALPHA:
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- case GL_RGB:
- case GL_BGR:
- case GL_RGBA:
- case GL_BGRA:
- case GL_ABGR_EXT:
- case GL_COLOR_INDEX:
- case GL_RED_INTEGER_EXT:
- case GL_GREEN_INTEGER_EXT:
- case GL_BLUE_INTEGER_EXT:
- case GL_ALPHA_INTEGER_EXT:
- case GL_RGB_INTEGER_EXT:
- case GL_RGBA_INTEGER_EXT:
- case GL_BGR_INTEGER_EXT:
- case GL_BGRA_INTEGER_EXT:
- case GL_LUMINANCE_INTEGER_EXT:
- case GL_LUMINANCE_ALPHA_INTEGER_EXT:
- /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */
- /* Could assert that colorbuffer has RedBits > 0 */
- break;
- case GL_DEPTH:
- case GL_DEPTH_COMPONENT:
- if (!att[BUFFER_DEPTH].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
- break;
- case GL_STENCIL:
- case GL_STENCIL_INDEX:
- if (!att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
- break;
- case GL_DEPTH_STENCIL_EXT:
- if (!att[BUFFER_DEPTH].Renderbuffer ||
- !att[BUFFER_STENCIL].Renderbuffer) {
- return GL_FALSE;
- }
- /*
- ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
- ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
- */
- break;
- default:
- _mesa_problem(ctx,
- "Unexpected format 0x%x in _mesa_dest_buffer_exists",
- format);
- return GL_FALSE;
- }
-
- /* OK */
- return GL_TRUE;
-}
-
-
-/**
- * Used to answer the GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES query.
- */
-GLenum
-_mesa_get_color_read_format(struct gl_context *ctx)
-{
- switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
- case MESA_FORMAT_ARGB8888:
- return GL_BGRA;
- case MESA_FORMAT_RGB565:
- return GL_BGR;
- default:
- return GL_RGBA;
- }
-}
-
-
-/**
- * Used to answer the GL_IMPLEMENTATION_COLOR_READ_TYPE_OES query.
- */
-GLenum
-_mesa_get_color_read_type(struct gl_context *ctx)
-{
- switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
- case MESA_FORMAT_ARGB8888:
- return GL_UNSIGNED_BYTE;
- case MESA_FORMAT_RGB565:
- return GL_UNSIGNED_SHORT_5_6_5_REV;
- default:
- return GL_UNSIGNED_BYTE;
- }
-}
-
-
-/**
- * Print framebuffer info to stderr, for debugging.
- */
-void
-_mesa_print_framebuffer(const struct gl_framebuffer *fb)
-{
- GLuint i;
-
- fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
- fprintf(stderr, " Size: %u x %u Status: %s\n", fb->Width, fb->Height,
- _mesa_lookup_enum_by_nr(fb->_Status));
- fprintf(stderr, " Attachments:\n");
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- const struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
- if (att->Type == GL_TEXTURE) {
- const struct gl_texture_image *texImage =
- _mesa_get_attachment_teximage_const(att);
- fprintf(stderr,
- " %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",
- i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,
- att->Zoffset, att->Complete);
- fprintf(stderr, " Size: %u x %u x %u Format %s\n",
- texImage->Width, texImage->Height, texImage->Depth,
- _mesa_get_format_name(texImage->TexFormat));
- }
- else if (att->Type == GL_RENDERBUFFER) {
- fprintf(stderr, " %2d: Renderbuffer %u, complete %d\n",
- i, att->Renderbuffer->Name, att->Complete);
- fprintf(stderr, " Size: %u x %u Format %s\n",
- att->Renderbuffer->Width, att->Renderbuffer->Height,
- _mesa_get_format_name(att->Renderbuffer->Format));
- }
- else {
- fprintf(stderr, " %2d: none\n", i);
- }
- }
-}
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.2
+ *
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Functions for allocating/managing framebuffers and renderbuffers.
+ * Also, routines for reading/writing renderbuffer data as ubytes,
+ * ushorts, uints, etc.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "buffers.h"
+#include "context.h"
+#include "depthstencil.h"
+#include "enums.h"
+#include "formats.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "fbobject.h"
+#include "framebuffer.h"
+#include "renderbuffer.h"
+#include "texobj.h"
+
+
+
+/**
+ * Compute/set the _DepthMax field for the given framebuffer.
+ * This value depends on the Z buffer resolution.
+ */
+static void
+compute_depth_max(struct gl_framebuffer *fb)
+{
+ if (fb->Visual.depthBits == 0) {
+ /* Special case. Even if we don't have a depth buffer we need
+ * good values for DepthMax for Z vertex transformation purposes
+ * and for per-fragment fog computation.
+ */
+ fb->_DepthMax = (1 << 16) - 1;
+ }
+ else if (fb->Visual.depthBits < 32) {
+ fb->_DepthMax = (1 << fb->Visual.depthBits) - 1;
+ }
+ else {
+ /* Special case since shift values greater than or equal to the
+ * number of bits in the left hand expression's type are undefined.
+ */
+ fb->_DepthMax = 0xffffffff;
+ }
+ fb->_DepthMaxF = (GLfloat) fb->_DepthMax;
+
+ /* Minimum resolvable depth value, for polygon offset */
+ fb->_MRD = (GLfloat)1.0 / fb->_DepthMaxF;
+}
+
+/**
+ * Create and initialize a gl_framebuffer object.
+ * This is intended for creating _window_system_ framebuffers, not generic
+ * framebuffer objects ala GL_EXT_framebuffer_object.
+ *
+ * \sa _mesa_new_framebuffer
+ */
+struct gl_framebuffer *
+_mesa_create_framebuffer(const struct gl_config *visual)
+{
+ struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
+ assert(visual);
+ if (fb) {
+ _mesa_initialize_window_framebuffer(fb, visual);
+ }
+ return fb;
+}
+
+
+/**
+ * Allocate a new gl_framebuffer object.
+ * This is the default function for ctx->Driver.NewFramebuffer().
+ * This is for allocating user-created framebuffers, not window-system
+ * framebuffers!
+ * \sa _mesa_create_framebuffer
+ */
+struct gl_framebuffer *
+_mesa_new_framebuffer(struct gl_context *ctx, GLuint name)
+{
+ struct gl_framebuffer *fb;
+ (void) ctx;
+ assert(name != 0);
+ fb = CALLOC_STRUCT(gl_framebuffer);
+ if (fb) {
+ _mesa_initialize_user_framebuffer(fb, name);
+ }
+ return fb;
+}
+
+
+/**
+ * Initialize a gl_framebuffer object. Typically used to initialize
+ * window system-created framebuffers, not user-created framebuffers.
+ * \sa _mesa_initialize_user_framebuffer
+ */
+void
+_mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,
+ const struct gl_config *visual)
+{
+ assert(fb);
+ assert(visual);
+
+ memset(fb, 0, sizeof(struct gl_framebuffer));
+
+ _glthread_INIT_MUTEX(fb->Mutex);
+
+ fb->RefCount = 1;
+
+ /* save the visual */
+ fb->Visual = *visual;
+
+ /* Init read/draw renderbuffer state */
+ if (visual->doubleBufferMode) {
+ fb->_NumColorDrawBuffers = 1;
+ fb->ColorDrawBuffer[0] = GL_BACK;
+ fb->_ColorDrawBufferIndexes[0] = BUFFER_BACK_LEFT;
+ fb->ColorReadBuffer = GL_BACK;
+ fb->_ColorReadBufferIndex = BUFFER_BACK_LEFT;
+ }
+ else {
+ fb->_NumColorDrawBuffers = 1;
+ fb->ColorDrawBuffer[0] = GL_FRONT;
+ fb->_ColorDrawBufferIndexes[0] = BUFFER_FRONT_LEFT;
+ fb->ColorReadBuffer = GL_FRONT;
+ fb->_ColorReadBufferIndex = BUFFER_FRONT_LEFT;
+ }
+
+ fb->Delete = _mesa_destroy_framebuffer;
+ fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+
+ compute_depth_max(fb);
+}
+
+
+/**
+ * Initialize a user-created gl_framebuffer object.
+ * \sa _mesa_initialize_window_framebuffer
+ */
+void
+_mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name)
+{
+ assert(fb);
+ assert(name);
+
+ memset(fb, 0, sizeof(struct gl_framebuffer));
+
+ fb->Name = name;
+ fb->RefCount = 1;
+ fb->_NumColorDrawBuffers = 1;
+ fb->ColorDrawBuffer[0] = GL_COLOR_ATTACHMENT0_EXT;
+ fb->_ColorDrawBufferIndexes[0] = BUFFER_COLOR0;
+ fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
+ fb->_ColorReadBufferIndex = BUFFER_COLOR0;
+ fb->Delete = _mesa_destroy_framebuffer;
+ _glthread_INIT_MUTEX(fb->Mutex);
+}
+
+
+/**
+ * Deallocate buffer and everything attached to it.
+ * Typically called via the gl_framebuffer->Delete() method.
+ */
+void
+_mesa_destroy_framebuffer(struct gl_framebuffer *fb)
+{
+ if (fb) {
+ _mesa_free_framebuffer_data(fb);
+ free(fb);
+ }
+}
+
+
+/**
+ * Free all the data hanging off the given gl_framebuffer, but don't free
+ * the gl_framebuffer object itself.
+ */
+void
+_mesa_free_framebuffer_data(struct gl_framebuffer *fb)
+{
+ GLuint i;
+
+ assert(fb);
+ assert(fb->RefCount == 0);
+
+ _glthread_DESTROY_MUTEX(fb->Mutex);
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+ if (att->Renderbuffer) {
+ _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
+ }
+ if (att->Texture) {
+ _mesa_reference_texobj(&att->Texture, NULL);
+ }
+ ASSERT(!att->Renderbuffer);
+ ASSERT(!att->Texture);
+ att->Type = GL_NONE;
+ }
+
+ /* unbind _Depth/_StencilBuffer to decr ref counts */
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, NULL);
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, NULL);
+}
+
+
+/**
+ * Set *ptr to point to fb, with refcounting and locking.
+ */
+void
+_mesa_reference_framebuffer(struct gl_framebuffer **ptr,
+ struct gl_framebuffer *fb)
+{
+ assert(ptr);
+ if (*ptr == fb) {
+ /* no change */
+ return;
+ }
+
+ if (*ptr) {
+ /* unreference old renderbuffer */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_framebuffer *oldFb = *ptr;
+
+ _glthread_LOCK_MUTEX(oldFb->Mutex);
+ ASSERT(oldFb->RefCount > 0);
+ oldFb->RefCount--;
+ deleteFlag = (oldFb->RefCount == 0);
+ _glthread_UNLOCK_MUTEX(oldFb->Mutex);
+
+ if (deleteFlag)
+ oldFb->Delete(oldFb);
+
+ *ptr = NULL;
+ }
+ assert(!*ptr);
+
+ if (fb) {
+ _glthread_LOCK_MUTEX(fb->Mutex);
+ fb->RefCount++;
+ _glthread_UNLOCK_MUTEX(fb->Mutex);
+ *ptr = fb;
+ }
+}
+
+
+/**
+ * Resize the given framebuffer's renderbuffers to the new width and height.
+ * This should only be used for window-system framebuffers, not
+ * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).
+ * This will typically be called via ctx->Driver.ResizeBuffers() or directly
+ * from a device driver.
+ *
+ * \note it's possible for ctx to be null since a window can be resized
+ * without a currently bound rendering context.
+ */
+void
+_mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
+ GLuint width, GLuint height)
+{
+ GLuint i;
+
+ /* XXX I think we could check if the size is not changing
+ * and return early.
+ */
+
+ /* For window system framebuffers, Name is zero */
+ assert(fb->Name == 0);
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+ if (att->Type == GL_RENDERBUFFER_EXT && att->Renderbuffer) {
+ struct gl_renderbuffer *rb = att->Renderbuffer;
+ /* only resize if size is changing */
+ if (rb->Width != width || rb->Height != height) {
+ if (rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+ ASSERT(rb->Width == width);
+ ASSERT(rb->Height == height);
+ }
+ else {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+ /* no return */
+ }
+ }
+ }
+ }
+
+ if (fb->_DepthBuffer) {
+ struct gl_renderbuffer *rb = fb->_DepthBuffer;
+ if (rb->Width != width || rb->Height != height) {
+ if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+ }
+ }
+ }
+
+ if (fb->_StencilBuffer) {
+ struct gl_renderbuffer *rb = fb->_StencilBuffer;
+ if (rb->Width != width || rb->Height != height) {
+ if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+ }
+ }
+ }
+
+ fb->Width = width;
+ fb->Height = height;
+
+ if (ctx) {
+ /* update scissor / window bounds */
+ _mesa_update_draw_buffer_bounds(ctx);
+ /* Signal new buffer state so that swrast will update its clipping
+ * info (the CLIP_BIT flag).
+ */
+ ctx->NewState |= _NEW_BUFFERS;
+ }
+}
+
+
+
+/**
+ * XXX THIS IS OBSOLETE - drivers should take care of detecting window
+ * size changes and act accordingly, likely calling _mesa_resize_framebuffer().
+ *
+ * GL_MESA_resize_buffers extension.
+ *
+ * When this function is called, we'll ask the window system how large
+ * the current window is. If it's a new size, we'll call the driver's
+ * ResizeBuffers function. The driver will then resize its color buffers
+ * as needed, and maybe call the swrast's routine for reallocating
+ * swrast-managed depth/stencil/accum/etc buffers.
+ * \note This function should only be called through the GL API, not
+ * from device drivers (as was done in the past).
+ */
+void
+_mesa_resizebuffers( struct gl_context *ctx )
+{
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glResizeBuffersMESA\n");
+
+ if (!ctx->Driver.GetBufferSize) {
+ return;
+ }
+
+ if (ctx->WinSysDrawBuffer) {
+ GLuint newWidth, newHeight;
+ struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;
+
+ assert(buffer->Name == 0);
+
+ /* ask device driver for size of output buffer */
+ ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
+
+ /* see if size of device driver's color buffer (window) has changed */
+ if (buffer->Width != newWidth || buffer->Height != newHeight) {
+ if (ctx->Driver.ResizeBuffers)
+ ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
+ }
+ }
+
+ if (ctx->WinSysReadBuffer
+ && ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
+ GLuint newWidth, newHeight;
+ struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;
+
+ assert(buffer->Name == 0);
+
+ /* ask device driver for size of read buffer */
+ ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
+
+ /* see if size of device driver's color buffer (window) has changed */
+ if (buffer->Width != newWidth || buffer->Height != newHeight) {
+ if (ctx->Driver.ResizeBuffers)
+ ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
+ }
+ }
+
+ ctx->NewState |= _NEW_BUFFERS; /* to update scissor / window bounds */
+}
+
+
+/*
+ * XXX THIS IS OBSOLETE
+ */
+void GLAPIENTRY
+_mesa_ResizeBuffersMESA( void )
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (ctx->Extensions.MESA_resize_buffers)
+ _mesa_resizebuffers( ctx );
+}
+
+
+
+/**
+ * Examine all the framebuffer's renderbuffers to update the Width/Height
+ * fields of the framebuffer. If we have renderbuffers with different
+ * sizes, set the framebuffer's width and height to the min size.
+ * Note: this is only intended for user-created framebuffers, not
+ * window-system framebuffes.
+ */
+static void
+update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ GLuint minWidth = ~0, minHeight = ~0;
+ GLuint i;
+
+ /* user-created framebuffers only */
+ assert(fb->Name);
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+ const struct gl_renderbuffer *rb = att->Renderbuffer;
+ if (rb) {
+ minWidth = MIN2(minWidth, rb->Width);
+ minHeight = MIN2(minHeight, rb->Height);
+ }
+ }
+
+ if (minWidth != ~0) {
+ fb->Width = minWidth;
+ fb->Height = minHeight;
+ }
+ else {
+ fb->Width = 0;
+ fb->Height = 0;
+ }
+}
+
+
+/**
+ * Update the context's current drawing buffer's Xmin, Xmax, Ymin, Ymax fields.
+ * These values are computed from the buffer's width and height and
+ * the scissor box, if it's enabled.
+ * \param ctx the GL context.
+ */
+void
+_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
+{
+ struct gl_framebuffer *buffer = ctx->DrawBuffer;
+
+ if (!buffer)
+ return;
+
+ if (buffer->Name) {
+ /* user-created framebuffer size depends on the renderbuffers */
+ update_framebuffer_size(ctx, buffer);
+ }
+
+ buffer->_Xmin = 0;
+ buffer->_Ymin = 0;
+ buffer->_Xmax = buffer->Width;
+ buffer->_Ymax = buffer->Height;
+
+ if (ctx->Scissor.Enabled) {
+ if (ctx->Scissor.X > buffer->_Xmin) {
+ buffer->_Xmin = ctx->Scissor.X;
+ }
+ if (ctx->Scissor.Y > buffer->_Ymin) {
+ buffer->_Ymin = ctx->Scissor.Y;
+ }
+ if (ctx->Scissor.X + ctx->Scissor.Width < buffer->_Xmax) {
+ buffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
+ }
+ if (ctx->Scissor.Y + ctx->Scissor.Height < buffer->_Ymax) {
+ buffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
+ }
+ /* finally, check for empty region */
+ if (buffer->_Xmin > buffer->_Xmax) {
+ buffer->_Xmin = buffer->_Xmax;
+ }
+ if (buffer->_Ymin > buffer->_Ymax) {
+ buffer->_Ymin = buffer->_Ymax;
+ }
+ }
+
+ ASSERT(buffer->_Xmin <= buffer->_Xmax);
+ ASSERT(buffer->_Ymin <= buffer->_Ymax);
+}
+
+
+/**
+ * The glGet queries of the framebuffer red/green/blue size, stencil size,
+ * etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
+ * change depending on the renderbuffer bindings. This function updates
+ * the given framebuffer's Visual from the current renderbuffer bindings.
+ *
+ * This may apply to user-created framebuffers or window system framebuffers.
+ *
+ * Also note: ctx->DrawBuffer->Visual.depthBits might not equal
+ * ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
+ * The former one is used to convert floating point depth values into
+ * integer Z values.
+ */
+void
+_mesa_update_framebuffer_visual(struct gl_context *ctx,
+ struct gl_framebuffer *fb)
+{
+ GLuint i;
+
+ memset(&fb->Visual, 0, sizeof(fb->Visual));
+ fb->Visual.rgbMode = GL_TRUE; /* assume this */
+
+#if 0 /* this _might_ be needed */
+ if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ /* leave visual fields zero'd */
+ return;
+ }
+#endif
+
+ /* find first RGB renderbuffer */
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ if (fb->Attachment[i].Renderbuffer) {
+ const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
+ const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
+ const gl_format fmt = rb->Format;
+
+ if (_mesa_is_legal_color_format(ctx, baseFormat)) {
+ fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
+ fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
+ fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
+ fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
+ fb->Visual.rgbBits = fb->Visual.redBits
+ + fb->Visual.greenBits + fb->Visual.blueBits;
+ fb->Visual.samples = rb->NumSamples;
+ if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
+ fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
+ break;
+ }
+ }
+ }
+
+ fb->Visual.floatMode = GL_FALSE;
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ if (fb->Attachment[i].Renderbuffer) {
+ const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
+ const gl_format fmt = rb->Format;
+
+ if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
+ fb->Visual.floatMode = GL_TRUE;
+ break;
+ }
+ }
+ }
+
+ if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
+ const struct gl_renderbuffer *rb =
+ fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ const gl_format fmt = rb->Format;
+ fb->Visual.haveDepthBuffer = GL_TRUE;
+ fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
+ }
+
+ if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
+ const struct gl_renderbuffer *rb =
+ fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ const gl_format fmt = rb->Format;
+ fb->Visual.haveStencilBuffer = GL_TRUE;
+ fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
+ }
+
+ if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
+ const struct gl_renderbuffer *rb =
+ fb->Attachment[BUFFER_ACCUM].Renderbuffer;
+ const gl_format fmt = rb->Format;
+ fb->Visual.haveAccumBuffer = GL_TRUE;
+ fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
+ fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
+ fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
+ fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
+ }
+
+ compute_depth_max(fb);
+}
+
+
+/**
+ * Update the framebuffer's _DepthBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a depth wrapper/adaptor.
+ *
+ * \param fb the framebuffer whose _DepthBuffer field to update
+ * \param attIndex indicates the renderbuffer to possibly wrap
+ */
+void
+_mesa_update_depth_buffer(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ GLuint attIndex)
+{
+ struct gl_renderbuffer *depthRb;
+
+ /* only one possiblity for now */
+ ASSERT(attIndex == BUFFER_DEPTH);
+
+ depthRb = fb->Attachment[attIndex].Renderbuffer;
+
+ if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {
+ /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */
+ if (!fb->_DepthBuffer
+ || fb->_DepthBuffer->Wrapped != depthRb
+ || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
+ /* need to update wrapper */
+ struct gl_renderbuffer *wrapper
+ = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
+ ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
+ }
+ }
+ else {
+ /* depthRb may be null */
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);
+ }
+}
+
+
+/**
+ * Update the framebuffer's _StencilBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a stencil wrapper/adaptor.
+ *
+ * \param fb the framebuffer whose _StencilBuffer field to update
+ * \param attIndex indicates the renderbuffer to possibly wrap
+ */
+void
+_mesa_update_stencil_buffer(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ GLuint attIndex)
+{
+ struct gl_renderbuffer *stencilRb;
+
+ ASSERT(attIndex == BUFFER_DEPTH ||
+ attIndex == BUFFER_STENCIL);
+
+ stencilRb = fb->Attachment[attIndex].Renderbuffer;
+
+ if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {
+ /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */
+ if (!fb->_StencilBuffer
+ || fb->_StencilBuffer->Wrapped != stencilRb
+ || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {
+ /* need to update wrapper */
+ struct gl_renderbuffer *wrapper
+ = _mesa_new_s8_renderbuffer_wrapper(ctx, stencilRb);
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);
+ ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);
+ }
+ }
+ else {
+ /* stencilRb may be null */
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);
+ }
+}
+
+
+/*
+ * Example DrawBuffers scenarios:
+ *
+ * 1. glDrawBuffer(GL_FRONT_AND_BACK), fixed-func or shader writes to
+ * "gl_FragColor" or program writes to the "result.color" register:
+ *
+ * fragment color output renderbuffer
+ * --------------------- ---------------
+ * color[0] Front, Back
+ *
+ *
+ * 2. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]), shader writes to
+ * gl_FragData[i] or program writes to result.color[i] registers:
+ *
+ * fragment color output renderbuffer
+ * --------------------- ---------------
+ * color[0] Front
+ * color[1] Aux0
+ * color[3] Aux1
+ *
+ *
+ * 3. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]) and shader writes to
+ * gl_FragColor, or fixed function:
+ *
+ * fragment color output renderbuffer
+ * --------------------- ---------------
+ * color[0] Front, Aux0, Aux1
+ *
+ *
+ * In either case, the list of renderbuffers is stored in the
+ * framebuffer->_ColorDrawBuffers[] array and
+ * framebuffer->_NumColorDrawBuffers indicates the number of buffers.
+ * The renderer (like swrast) has to look at the current fragment shader
+ * to see if it writes to gl_FragColor vs. gl_FragData[i] to determine
+ * how to map color outputs to renderbuffers.
+ *
+ * Note that these two calls are equivalent (for fixed function fragment
+ * shading anyway):
+ * a) glDrawBuffer(GL_FRONT_AND_BACK); (assuming non-stereo framebuffer)
+ * b) glDrawBuffers(2, [GL_FRONT_LEFT, GL_BACK_LEFT]);
+ */
+
+
+
+
+/**
+ * Update the (derived) list of color drawing renderbuffer pointers.
+ * Later, when we're rendering we'll loop from 0 to _NumColorDrawBuffers
+ * writing colors.
+ */
+static void
+update_color_draw_buffers(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ GLuint output;
+
+ /* set 0th buffer to NULL now in case _NumColorDrawBuffers is zero */
+ fb->_ColorDrawBuffers[0] = NULL;
+
+ for (output = 0; output < fb->_NumColorDrawBuffers; output++) {
+ GLint buf = fb->_ColorDrawBufferIndexes[output];
+ if (buf >= 0) {
+ fb->_ColorDrawBuffers[output] = fb->Attachment[buf].Renderbuffer;
+ }
+ else {
+ fb->_ColorDrawBuffers[output] = NULL;
+ }
+ }
+}
+
+
+/**
+ * Update the (derived) color read renderbuffer pointer.
+ * Unlike the DrawBuffer, we can only read from one (or zero) color buffers.
+ */
+static void
+update_color_read_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ (void) ctx;
+ if (fb->_ColorReadBufferIndex == -1 ||
+ fb->DeletePending ||
+ fb->Width == 0 ||
+ fb->Height == 0) {
+ fb->_ColorReadBuffer = NULL; /* legal! */
+ }
+ else {
+ ASSERT(fb->_ColorReadBufferIndex >= 0);
+ ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);
+ fb->_ColorReadBuffer
+ = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
+ }
+}
+
+
+/**
+ * Update a gl_framebuffer's derived state.
+ *
+ * Specifically, update these framebuffer fields:
+ * _ColorDrawBuffers
+ * _NumColorDrawBuffers
+ * _ColorReadBuffer
+ * _DepthBuffer
+ * _StencilBuffer
+ *
+ * If the framebuffer is user-created, make sure it's complete.
+ *
+ * The following functions (at least) can effect framebuffer state:
+ * glReadBuffer, glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT,
+ * glRenderbufferStorageEXT.
+ */
+static void
+update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ if (fb->Name == 0) {
+ /* This is a window-system framebuffer */
+ /* Need to update the FB's GL_DRAW_BUFFER state to match the
+ * context state (GL_READ_BUFFER too).
+ */
+ if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {
+ _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
+ ctx->Color.DrawBuffer, NULL);
+ }
+ }
+ else {
+ /* This is a user-created framebuffer.
+ * Completeness only matters for user-created framebuffers.
+ */
+ if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {
+ _mesa_test_framebuffer_completeness(ctx, fb);
+ }
+ }
+
+ /* Strictly speaking, we don't need to update the draw-state
+ * if this FB is bound as ctx->ReadBuffer (and conversely, the
+ * read-state if this FB is bound as ctx->DrawBuffer), but no
+ * harm.
+ */
+ update_color_draw_buffers(ctx, fb);
+ update_color_read_buffer(ctx, fb);
+ _mesa_update_depth_buffer(ctx, fb, BUFFER_DEPTH);
+ _mesa_update_stencil_buffer(ctx, fb, BUFFER_STENCIL);
+
+ compute_depth_max(fb);
+}
+
+
+/**
+ * Update state related to the current draw/read framebuffers.
+ */
+void
+_mesa_update_framebuffer(struct gl_context *ctx)
+{
+ struct gl_framebuffer *drawFb;
+ struct gl_framebuffer *readFb;
+
+ assert(ctx);
+ drawFb = ctx->DrawBuffer;
+ readFb = ctx->ReadBuffer;
+
+ update_framebuffer(ctx, drawFb);
+ if (readFb != drawFb)
+ update_framebuffer(ctx, readFb);
+}
+
+
+/**
+ * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
+ * glCopyTex[Sub]Image, etc) exists.
+ * \param format a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
+ * GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
+ * \return GL_TRUE if buffer exists, GL_FALSE otherwise
+ */
+GLboolean
+_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
+{
+ const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
+
+ /* If we don't know the framebuffer status, update it now */
+ if (ctx->ReadBuffer->_Status == 0) {
+ _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
+ }
+
+ if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ return GL_FALSE;
+ }
+
+ switch (format) {
+ case GL_COLOR:
+ case GL_RED:
+ case GL_GREEN:
+ case GL_BLUE:
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_INTENSITY:
+ case GL_RG:
+ case GL_RGB:
+ case GL_BGR:
+ case GL_RGBA:
+ case GL_BGRA:
+ case GL_ABGR_EXT:
+ case GL_COLOR_INDEX:
+ case GL_RED_INTEGER_EXT:
+ case GL_GREEN_INTEGER_EXT:
+ case GL_BLUE_INTEGER_EXT:
+ case GL_ALPHA_INTEGER_EXT:
+ case GL_RGB_INTEGER_EXT:
+ case GL_RGBA_INTEGER_EXT:
+ case GL_BGR_INTEGER_EXT:
+ case GL_BGRA_INTEGER_EXT:
+ case GL_LUMINANCE_INTEGER_EXT:
+ case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+ if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
+ return GL_FALSE;
+ }
+ ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
+ _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
+ _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
+ _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
+ _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
+ break;
+ case GL_DEPTH:
+ case GL_DEPTH_COMPONENT:
+ if (!att[BUFFER_DEPTH].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
+ break;
+ case GL_STENCIL:
+ case GL_STENCIL_INDEX:
+ if (!att[BUFFER_STENCIL].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ if (!att[BUFFER_DEPTH].Renderbuffer ||
+ !att[BUFFER_STENCIL].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*
+ ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
+ ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
+ */
+ break;
+ default:
+ _mesa_problem(ctx,
+ "Unexpected format 0x%x in _mesa_source_buffer_exists",
+ format);
+ return GL_FALSE;
+ }
+
+ /* OK */
+ return GL_TRUE;
+}
+
+
+/**
+ * As above, but for drawing operations.
+ * XXX could do some code merging w/ above function.
+ */
+GLboolean
+_mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)
+{
+ const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
+
+ /* If we don't know the framebuffer status, update it now */
+ if (ctx->DrawBuffer->_Status == 0) {
+ _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer);
+ }
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ return GL_FALSE;
+ }
+
+ switch (format) {
+ case GL_COLOR:
+ case GL_RED:
+ case GL_GREEN:
+ case GL_BLUE:
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_INTENSITY:
+ case GL_RGB:
+ case GL_BGR:
+ case GL_RGBA:
+ case GL_BGRA:
+ case GL_ABGR_EXT:
+ case GL_COLOR_INDEX:
+ case GL_RED_INTEGER_EXT:
+ case GL_GREEN_INTEGER_EXT:
+ case GL_BLUE_INTEGER_EXT:
+ case GL_ALPHA_INTEGER_EXT:
+ case GL_RGB_INTEGER_EXT:
+ case GL_RGBA_INTEGER_EXT:
+ case GL_BGR_INTEGER_EXT:
+ case GL_BGRA_INTEGER_EXT:
+ case GL_LUMINANCE_INTEGER_EXT:
+ case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+ /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */
+ /* Could assert that colorbuffer has RedBits > 0 */
+ break;
+ case GL_DEPTH:
+ case GL_DEPTH_COMPONENT:
+ if (!att[BUFFER_DEPTH].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
+ break;
+ case GL_STENCIL:
+ case GL_STENCIL_INDEX:
+ if (!att[BUFFER_STENCIL].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ if (!att[BUFFER_DEPTH].Renderbuffer ||
+ !att[BUFFER_STENCIL].Renderbuffer) {
+ return GL_FALSE;
+ }
+ /*
+ ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
+ ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
+ */
+ break;
+ default:
+ _mesa_problem(ctx,
+ "Unexpected format 0x%x in _mesa_dest_buffer_exists",
+ format);
+ return GL_FALSE;
+ }
+
+ /* OK */
+ return GL_TRUE;
+}
+
+
+/**
+ * Used to answer the GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES query.
+ */
+GLenum
+_mesa_get_color_read_format(struct gl_context *ctx)
+{
+ switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
+ case MESA_FORMAT_ARGB8888:
+ return GL_BGRA;
+ case MESA_FORMAT_RGB565:
+ return GL_BGR;
+ default:
+ return GL_RGBA;
+ }
+}
+
+
+/**
+ * Used to answer the GL_IMPLEMENTATION_COLOR_READ_TYPE_OES query.
+ */
+GLenum
+_mesa_get_color_read_type(struct gl_context *ctx)
+{
+ switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
+ case MESA_FORMAT_ARGB8888:
+ return GL_UNSIGNED_BYTE;
+ case MESA_FORMAT_RGB565:
+ return GL_UNSIGNED_SHORT_5_6_5_REV;
+ default:
+ return GL_UNSIGNED_BYTE;
+ }
+}
+
+
+/**
+ * Print framebuffer info to stderr, for debugging.
+ */
+void
+_mesa_print_framebuffer(const struct gl_framebuffer *fb)
+{
+ GLuint i;
+
+ fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
+ fprintf(stderr, " Size: %u x %u Status: %s\n", fb->Width, fb->Height,
+ _mesa_lookup_enum_by_nr(fb->_Status));
+ fprintf(stderr, " Attachments:\n");
+
+ for (i = 0; i < BUFFER_COUNT; i++) {
+ const struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+ if (att->Type == GL_TEXTURE) {
+ const struct gl_texture_image *texImage =
+ _mesa_get_attachment_teximage_const(att);
+ fprintf(stderr,
+ " %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",
+ i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,
+ att->Zoffset, att->Complete);
+ fprintf(stderr, " Size: %u x %u x %u Format %s\n",
+ texImage->Width, texImage->Height, texImage->Depth,
+ _mesa_get_format_name(texImage->TexFormat));
+ }
+ else if (att->Type == GL_RENDERBUFFER) {
+ fprintf(stderr, " %2d: Renderbuffer %u, complete %d\n",
+ i, att->Renderbuffer->Name, att->Complete);
+ fprintf(stderr, " Size: %u x %u Format %s\n",
+ att->Renderbuffer->Width, att->Renderbuffer->Height,
+ _mesa_get_format_name(att->Renderbuffer->Format));
+ }
+ else {
+ fprintf(stderr, " %2d: none\n", i);
+ }
+ }
+}
diff --git a/mesalib/src/mesa/main/texfetch.c b/mesalib/src/mesa/main/texfetch.c
index caabc19bb..d091789ff 100644
--- a/mesalib/src/mesa/main/texfetch.c
+++ b/mesalib/src/mesa/main/texfetch.c
@@ -631,6 +631,34 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
fetch_texel_3d_f_intensity_f16,
store_texel_intensity_f16
},
+ {
+ MESA_FORMAT_R_FLOAT32,
+ fetch_texel_1d_f_r_f32,
+ fetch_texel_2d_f_r_f32,
+ fetch_texel_3d_f_r_f32,
+ store_texel_r_f32
+ },
+ {
+ MESA_FORMAT_R_FLOAT16,
+ fetch_texel_1d_f_r_f16,
+ fetch_texel_2d_f_r_f16,
+ fetch_texel_3d_f_r_f16,
+ store_texel_r_f16
+ },
+ {
+ MESA_FORMAT_RG_FLOAT32,
+ fetch_texel_1d_f_rg_f32,
+ fetch_texel_2d_f_rg_f32,
+ fetch_texel_3d_f_rg_f32,
+ store_texel_rg_f32
+ },
+ {
+ MESA_FORMAT_RG_FLOAT16,
+ fetch_texel_1d_f_rg_f16,
+ fetch_texel_2d_f_rg_f16,
+ fetch_texel_3d_f_rg_f16,
+ store_texel_rg_f16
+ },
/* non-normalized, signed int */
{
diff --git a/mesalib/src/mesa/main/texfetch_tmp.h b/mesalib/src/mesa/main/texfetch_tmp.h
index f1f6a01a4..0b9d5da07 100644
--- a/mesalib/src/mesa/main/texfetch_tmp.h
+++ b/mesalib/src/mesa/main/texfetch_tmp.h
@@ -438,6 +438,110 @@ static void store_texel_intensity_f16(struct gl_texture_image *texImage,
#endif
+/* MESA_FORMAT_R_FLOAT32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f32)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+ texel[RCOMP] = src[0];
+ texel[GCOMP] = 0.0F;
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f32(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+ dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_R_FLOAT16 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f16)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+ texel[RCOMP] = _mesa_half_to_float(src[0]);
+ texel[GCOMP] = 0.0F;
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f16(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+ dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT32 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f32)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+ texel[RCOMP] = src[0];
+ texel[GCOMP] = src[1];
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f32(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+ dst[0] = rgba[RCOMP];
+ dst[1] = rgba[GCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT16 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f16)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+ texel[RCOMP] = _mesa_half_to_float(src[0]);
+ texel[GCOMP] = _mesa_half_to_float(src[1]);
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f16(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+ dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+ dst[1] = _mesa_float_to_half(rgba[GCOMP]);
+}
+#endif
/*
diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c
index da907455b..97b905fd3 100644
--- a/mesalib/src/mesa/main/texformat.c
+++ b/mesalib/src/mesa/main/texformat.c
@@ -628,6 +628,22 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
}
}
+ if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
+ switch (internalFormat) {
+ case GL_R16F:
+ return MESA_FORMAT_R_FLOAT16;
+ case GL_R32F:
+ return MESA_FORMAT_R_FLOAT32;
+ case GL_RG16F:
+ return MESA_FORMAT_RG_FLOAT16;
+ case GL_RG32F:
+ return MESA_FORMAT_RG_FLOAT32;
+
+ default:
+ ; /* fallthrough */
+ }
+ }
+
if (ctx->Extensions.EXT_texture_format_BGRA8888) {
switch (internalFormat) {
case GL_BGRA:
diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c
index 87cb327d2..9a690529a 100644
--- a/mesalib/src/mesa/main/texstore.c
+++ b/mesalib/src/mesa/main/texstore.c
@@ -3535,13 +3535,17 @@ _mesa_texstore_rgba_float32(TEXSTORE_PARAMS)
dstFormat == MESA_FORMAT_ALPHA_FLOAT32 ||
dstFormat == MESA_FORMAT_LUMINANCE_FLOAT32 ||
dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32 ||
- dstFormat == MESA_FORMAT_INTENSITY_FLOAT32);
+ dstFormat == MESA_FORMAT_INTENSITY_FLOAT32 ||
+ dstFormat == MESA_FORMAT_R_FLOAT32 ||
+ dstFormat == MESA_FORMAT_RG_FLOAT32);
ASSERT(baseInternalFormat == GL_RGBA ||
baseInternalFormat == GL_RGB ||
baseInternalFormat == GL_ALPHA ||
baseInternalFormat == GL_LUMINANCE ||
baseInternalFormat == GL_LUMINANCE_ALPHA ||
- baseInternalFormat == GL_INTENSITY);
+ baseInternalFormat == GL_INTENSITY ||
+ baseInternalFormat == GL_RED ||
+ baseInternalFormat == GL_RG);
ASSERT(texelBytes == components * sizeof(GLfloat));
if (!ctx->_ImageTransferState &&
@@ -3605,13 +3609,17 @@ _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
dstFormat == MESA_FORMAT_ALPHA_FLOAT16 ||
dstFormat == MESA_FORMAT_LUMINANCE_FLOAT16 ||
dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16 ||
- dstFormat == MESA_FORMAT_INTENSITY_FLOAT16);
+ dstFormat == MESA_FORMAT_INTENSITY_FLOAT16 ||
+ dstFormat == MESA_FORMAT_R_FLOAT16 ||
+ dstFormat == MESA_FORMAT_RG_FLOAT16);
ASSERT(baseInternalFormat == GL_RGBA ||
baseInternalFormat == GL_RGB ||
baseInternalFormat == GL_ALPHA ||
baseInternalFormat == GL_LUMINANCE ||
baseInternalFormat == GL_LUMINANCE_ALPHA ||
- baseInternalFormat == GL_INTENSITY);
+ baseInternalFormat == GL_INTENSITY ||
+ baseInternalFormat == GL_RED ||
+ baseInternalFormat == GL_RG);
ASSERT(texelBytes == components * sizeof(GLhalfARB));
if (!ctx->_ImageTransferState &&
@@ -4252,6 +4260,10 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, _mesa_texstore_rgba_float16 },
{ MESA_FORMAT_INTENSITY_FLOAT32, _mesa_texstore_rgba_float32 },
{ MESA_FORMAT_INTENSITY_FLOAT16, _mesa_texstore_rgba_float16 },
+ { MESA_FORMAT_R_FLOAT32, _mesa_texstore_rgba_float32 },
+ { MESA_FORMAT_R_FLOAT16, _mesa_texstore_rgba_float16 },
+ { MESA_FORMAT_RG_FLOAT32, _mesa_texstore_rgba_float32 },
+ { MESA_FORMAT_RG_FLOAT16, _mesa_texstore_rgba_float16 },
{ MESA_FORMAT_RGBA_INT8, _mesa_texstore_rgba_int8 },
{ MESA_FORMAT_RGBA_INT16, _mesa_texstore_rgba_int16 },
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 08:15:16 +0000